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<title>Object model</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Object model</span></span>

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<p>In <a href="Computing" title="Computing">computing</a>, <b>object model</b> has two related but distinct meanings:

</p>

<ol><li>The properties of <a href="Object_(computer_science)" title="Object (computer science)">objects</a> in general in a specific computer <a href="Programming_language" title="Programming language">programming language</a>, technology, notation or <a href="Methodology" title="Methodology">methodology</a> that uses them. Examples are the object models of <i><a href="Java_(programming_language)" title="Java (programming language)">Java</a></i>, the <i><a href="Component_Object_Model" title="Component Object Model">Component Object Model</a> (COM)</i>, or <i><a href="Object-modeling_technique" title="Object-modeling technique">Object-Modeling Technique</a> (OMT)</i>. Such object models are usually defined using concepts such as <a href="Class_(computer_science)" class="mw-redirect" title="Class (computer science)">class</a>, <a href="Generic_function" title="Generic function">generic function</a>, <a href="Message_(computer_science)" class="mw-redirect" title="Message (computer science)">message</a>, <a href="Inheritance_(object-oriented_programming)" title="Inheritance (object-oriented programming)">inheritance</a>, <a href="Polymorphism_in_object-oriented_programming" class="mw-redirect" title="Polymorphism in object-oriented programming">polymorphism</a>, and <a href="Information_hiding" title="Information hiding">encapsulation</a>. There is an extensive literature on formalized object models as a subset of the <a href="Formal_semantics_of_programming_languages" class="mw-redirect" title="Formal semantics of programming languages">formal semantics of programming languages</a>.</li>

<li>A collection of objects or classes through which a <a href="Computer_program" title="Computer program">program</a> can examine and manipulate some specific parts of its world. In other words, the object-oriented <a href="Interface_(computer_science)" class="mw-redirect" title="Interface (computer science)">interface</a> to some service or system. Such an interface is said to be the <i>object model of</i> the represented service or system. For example, the <a href="Document_Object_Model" title="Document Object Model">Document Object Model</a> (DOM) is a collection of objects that represent a <a href="Web_page" title="Web page">page</a> in a <a href="Web_browser" title="Web browser">web browser</a>, used by <a href="Scripting_language" title="Scripting language">script</a> programs to examine and dynamically change the page. There is a <a href="Microsoft_Excel" title="Microsoft Excel">Microsoft Excel</a> object model <a rel="nofollow" class="external autonumber" href="http://msdn2.microsoft.com/en-us/library/wss56bz7.aspx">[1]</a> for controlling Microsoft Excel from another program, and the <a href="ASCOM_(standard)" title="ASCOM (standard)">ASCOM</a> Telescope Driver is an object model for controlling an astronomical telescope.</li></ol>

<div class="mw-heading mw-heading2"><h2 id="Features">Features</h2></div>

<p>An object model consists of the following important features:

</p>

<div class="mw-heading mw-heading3"><h3 id="Object_reference">Object reference</h3></div>

<dl><dd>Objects can be accessed via object references. To invoke a method in an object, the object reference and method name are given, together with any arguments.</dd></dl>

<div class="mw-heading mw-heading3"><h3 id="Interfaces">Interfaces</h3></div>

<dl><dd>An interface provides a definition of the signature of a set of methods without specifying their implementation. An object will provide a particular interface if its class contains code that implement the method of that interface. An interface also defines types that can be used to declare the type of variables or parameters and <a href="Return_value" class="mw-redirect" title="Return value">return values</a> of methods.</dd></dl>

<div class="mw-heading mw-heading3"><h3 id="Actions">Actions</h3></div>

<dl><dd>An action in <a href="Object-oriented_programming" title="Object-oriented programming">object-oriented programming</a> (OOP) is initiated by an object invoking a method in another object. An invocation can include additional information needed to carry out the method. The receiver executes the appropriate method and then returns control to the invoking object, sometimes supplying a result.</dd></dl>

<div class="mw-heading mw-heading3"><h3 id="Exceptions">Exceptions</h3></div>

<dl><dd>Programs can encounter various errors and unexpected conditions of varying seriousness. During the execution of the method many different problems may be discovered. <a href="Exception_handling" title="Exception handling">Exceptions</a> provide a clean way to deal with error conditions without complicating the code. A block of code may be defined to throw an exception whenever particular unexpected conditions or errors arise. This means that control passes to another block of code that catches the exception.</dd></dl>

<ul><li><a href="Object-oriented_programming" title="Object-oriented programming">Object-oriented programming</a></li>

<li><a href="Object-oriented_analysis_and_design" title="Object-oriented analysis and design">Object-oriented analysis and design</a></li>

<li><a href="Object_database" title="Object database">Object database</a></li>

<li><a href="Object_Management_Group" title="Object Management Group">Object Management Group</a></li>

<li><a href="Domain-driven_design" title="Domain-driven design">Domain-driven design</a></li>

<li><a href="Eigenclass_model" class="mw-redirect" title="Eigenclass model">Eigenclass model</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="Literature">Literature</h2></div>

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</style><cite id="CITEREFWeisfeld2003" class="citation book cs1">Weisfeld, Matt (2003). <i>The Object-Oriented Thought Process</i> (2nd ed.). Sams. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-672-32611-6</bdi>.</cite></li>

<li><cite id="CITEREFFowler1996" class="citation book cs1">Fowler, Martin (1996). <i>Analysis Patterns: Reusable Object Models</i>. Addison-Wesley. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-201-89542-0</bdi>.</cite></li>

<li><cite id="CITEREFFisherHonsellMitchell1994" class="citation book cs1">Fisher, K.; Honsell, F.; Mitchell, J.C. (1994). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180703075724/https://pdfs.semanticscholar.org/5cf7/1e3120c48c23f9cecdbe5f904b884e0e1a2d.pdf">"A lambda calculus of objects and method specialization"</a> <span class="cs1-format">(PDF)</span>. <i>[1993] Proceedings Eighth Annual IEEE Symposium on Logic in Computer Science</i>. Vol. 1. pp. <span class="nowrap">3–</span>37. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1109%2FLICS.1993.287603">10.1109/LICS.1993.287603</a>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-8186-3140-6</bdi>. <a href="S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:19578302">19578302</a>. Archived from <a rel="nofollow" class="external text" href="https://pdfs.semanticscholar.org/5cf7/1e3120c48c23f9cecdbe5f904b884e0e1a2d.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2018-07-03.</cite> <span class="cs1-visible-error citation-comment"><code class="cs1-code">{{cite book}}</code>: </span><span class="cs1-visible-error citation-comment"><code class="cs1-code">|journal=</code> ignored (help)</span></li>

<li><cite id="CITEREFMarini2002" class="citation book cs1">Marini, Joe (2002). <i>Document Object Model: Processing Structured Documents</i>. Osborne/McGray-Hill. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-07-222436-3</bdi>.</cite></li>

<li><cite id="CITEREFLippman1996" class="citation book cs1"><a href="Stanley_B._Lippman" title="Stanley B. Lippman">Lippman, Stanley</a> (1996). <i>Inside the C++ Object Model</i>. Addison-Wesley. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-201-83454-5</bdi>.</cite></li></ul>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="http://www.w3.org/DOM/">Document Object Model (DOM)</a> The official <a href="W3C" class="mw-redirect" title="W3C">W3C</a> definition of the DOM.</li>

<li><a rel="nofollow" class="external text" href="http://www.cs.usfca.edu/~parrt/doc/java/JavaObjectModel-notes.pdf">"The Java Object Model"</a></li>

<li><a rel="nofollow" class="external text" href="http://www.atalon.cz/rb-om/ruby-object-model">The Ruby Object Model: Data Structure in Detail</a></li>

<li><a rel="nofollow" class="external text" href="http://www.atalon.cz/om/object-membership/">Object Membership: The core structure of object-oriented programming</a></li>

<li><a rel="nofollow" class="external text" href="http://www.objs.com/x3h7/fmindex.htm">Object Model Features Matrix</a> A "representative sample of the design space of object models" (sense 1).</li>

<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20010201145500/http://ascom-standards.org/">ASCOM Standards</a> web site</li></ul>

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</style><div id="Software_engineering336" style="font-size:114%;margin:0 4em"><a href="Software_engineering" title="Software engineering">Software engineering</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Fields</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Computer_programming" title="Computer programming">Computer programming</a></li>

<li><a href="DevOps" title="DevOps">DevOps</a></li>

<li><a href="Empirical_software_engineering" title="Empirical software engineering">Empirical software engineering</a></li>

<li><a href="Experimental_software_engineering" title="Experimental software engineering">Experimental software engineering</a></li>

<li><a href="Formal_methods" title="Formal methods">Formal methods</a></li>

<li><a href="Requirements_engineering" title="Requirements engineering">Requirements engineering</a></li>

<li><a href="Search-based_software_engineering" title="Search-based software engineering">Search-based software engineering</a></li>

<li><a href="Site_reliability_engineering" title="Site reliability engineering">Site reliability engineering</a></li>

<li><a href="Social_software_engineering" title="Social software engineering">Social software engineering</a></li>

<li><a href="Software_deployment" title="Software deployment">Software deployment</a></li>

<li><a href="Software_design" title="Software design">Software design</a></li>

<li><a href="Software_maintenance" title="Software maintenance">Software maintenance</a></li>

<li><a href="Software_testing" title="Software testing">Software testing</a></li>

<li><a href="Systems_analysis" title="Systems analysis">Systems analysis</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concepts</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Abstraction_(computer_science)" title="Abstraction (computer science)">Abstraction</a></li>

<li><a href="Computer_compatibility" title="Computer compatibility">Compatibility</a>

<ul><li><a href="Backward_compatibility" title="Backward compatibility">Backward compatibility</a></li>

<li><a href="Compatibility_layer" title="Compatibility layer">Compatibility layer</a></li>

<li><a href="Compatibility_mode" title="Compatibility mode">Compatibility mode</a></li>

<li><a href="Forward_compatibility" title="Forward compatibility">Forward compatibility</a></li>

<li><a href="Software_incompatibility" title="Software incompatibility">Software incompatibility</a></li></ul></li>

<li><a href="Component-based_software_engineering" title="Component-based software engineering">Component-based software engineering</a></li>

<li><a href="Data_modeling" title="Data modeling">Data modeling</a></li>

<li><a href="Enterprise_architecture" title="Enterprise architecture">Enterprise architecture</a></li>

<li><a href="Functional_specification" title="Functional specification">Functional specification</a></li>

<li><a href="Modeling_language" title="Modeling language">Modeling language</a></li>

<li><a href="Programming_paradigm" title="Programming paradigm">Programming paradigm</a></li>

<li><a href="Software" title="Software">Software</a></li>

<li><a href="Software_archaeology" title="Software archaeology">Software archaeology</a></li>

<li><a href="Software_architecture" title="Software architecture">Software architecture</a></li>

<li><a href="Software_configuration_management" title="Software configuration management">Software configuration management</a></li>

<li><a href="Software_development_process" title="Software development process">Software development process/methodology</a></li>

<li><a href="Software_quality" title="Software quality">Software quality</a></li>

<li><a href="Software_quality_assurance" title="Software quality assurance">Software quality assurance</a></li>

<li><a href="Software_system" title="Software system">Software system</a></li>

<li><a href="Software_verification_and_validation" title="Software verification and validation">Software verification and validation</a></li>

<li><a href="Structured_analysis" title="Structured analysis">Structured analysis</a>

<ul><li><a href="Essential_systems_analysis" title="Essential systems analysis">Essential analysis</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Orientations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Agile_software_development" title="Agile software development">Agile</a></li>

<li><a href="Aspect-oriented_programming" title="Aspect-oriented programming">Aspect-oriented</a></li>

<li><a href="Object-oriented_programming" title="Object-oriented programming">Object orientation</a></li>

<li><a href="Ontology_(information_science)" title="Ontology (information science)">Ontology</a></li>

<li><a href="Service-oriented_architecture" title="Service-oriented architecture">Service orientation</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Models</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;">Developmental</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Agile_software_development" title="Agile software development">Agile</a></li>

<li><a href="Executable_UML" title="Executable UML">Executable UML</a></li>

<li><a href="Incremental_build_model" title="Incremental build model">Incremental model</a></li>

<li><a href="Iterative_and_incremental_development" title="Iterative and incremental development">Iterative model</a></li>

<li><a href="Software_prototyping" title="Software prototyping">Prototype model</a></li>

<li><a href="Scrum_(software_development)" title="Scrum (software development)">Scrum</a></li>

<li><a href="Spiral_model" title="Spiral model">Spiral model</a></li>

<li><a href="V-model_(software_development)" title="V-model (software development)">V-model</a></li>

<li><a href="Waterfall_model" title="Waterfall model">Waterfall model</a></li>

<li><a href="Model-driven_engineering" title="Model-driven engineering">Model-driven engineering</a></li>

<li><a href="Round-trip_engineering" title="Round-trip engineering">Round-trip engineering</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Data_model" title="Data model">Data model</a></li>

<li><a href="Entity%E2%80%93relationship_model" title="Entity–relationship model">ER model</a></li>

<li><a href="Function_model" title="Function model">Function model</a></li>

<li><a href="Information_model" title="Information model">Information model</a></li>

<li><a href="Metamodeling" title="Metamodeling">Metamodeling</a></li>

<li><a href="ISO/IEC_15504" title="ISO/IEC 15504">SPICE</a></li>

<li><a href="Systems_modeling" title="Systems modeling">Systems model</a></li>

<li><a href="View_model" title="View model">View model</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;">Languages</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Systems_modeling_language" title="Systems modeling language">SysML</a></li>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Systems_design" title="Systems design">Systems design</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Software_requirements_specification" title="Software requirements specification"> Requirements</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Functional_requirement" title="Functional requirement">Functional requirement</a></li>

<li><a href="Non-functional_requirement" title="Non-functional requirement">Non-functional requirement</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Capacity_planning" title="Capacity planning"> Capacity</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Active_users" title="Active users"> Users</a></li>

<li><a href="Central_processing_units" class="mw-redirect" title="Central processing units"> Compute</a></li>

<li><a href="Computer_memory" title="Computer memory"> Memory</a></li>

<li><a href="Computer_data_storage" title="Computer data storage"> Storage</a></li>

<li><a href="Bandwidth_(computing)" title="Bandwidth (computing)"> Network</a></li>

<li><a href="Web_traffic" title="Web traffic">Web traffic</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Interface_(computing)" title="Interface (computing)"> Interface</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="GraphQL" title="GraphQL">GraphQL</a></li>

<li><a href="Webhook" title="Webhook">Webhook</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="High-level_design" title="High-level design">High-level design</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Client_(computing)" title="Client (computing)"> Client</a></li>

<li><a href="Load_balancing_(computing)" title="Load balancing (computing)"> Load balancing</a></li>

<li><a href="Application_server" title="Application server">Application server</a></li>

<li><a href="Message_queue" title="Message queue">Message queue</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="System_Integration" class="mw-redirect" title="System Integration"> Integration</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Vertical_integration" title="Vertical integration"> Vertical</a></li>

<li><a href="API_management" title="API management"> API Gateway</a></li>

<li><a href="Event_store" title="Event store"> Event Source</a></li>

<li><a href="Batch_processing" title="Batch processing"> Batch</a></li>

<li><a href="Stream_processing" title="Stream processing">Stream</a></li>

<li><a href="Orchestration_(computing)" title="Orchestration (computing)"> Orchestration</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Architectures" class="mw-redirect" title="Architectures">Architectures</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Monolithic_application" title="Monolithic application"> Monolithic</a></li>

<li><a href="Microservices" title="Microservices">Microservices</a></li>

<li><a href="Event-driven_architecture" title="Event-driven architecture"> Event-Driven</a></li>

<li><a href="Client%E2%80%93server_model" title="Client–server model"> Client–server</a></li>

<li><a href="Serverless_computing" title="Serverless computing"> Serverless</a></li>

<li><a href="Circuit_breaker_design_pattern" title="Circuit breaker design pattern"> Circuit breaker</a></li>

<li><a href="Rate_limiting" title="Rate limiting">Rate limiting</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Database" title="Database">Database</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Relational_database" title="Relational database"> Relational</a></li>

<li><a href="NoSQL" title="NoSQL">NoSQL</a></li>

<li><a href="Graph_database" title="Graph database"> Graph</a></li>

<li><a href="Key%E2%80%93value_database" title="Key–value database"> Key–value</a></li>

<li><a href="Time_series_database" title="Time series database"> Time series</a></li>

<li><a href="Data_orientation" title="Data orientation"> Column Oriented</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Systems_design" title="Systems design"> Principles</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Consistency_(database_systems)" title="Consistency (database systems)">Consistency</a></li>

<li><a href="Reliability_engineering" title="Reliability engineering">Reliability</a></li>

<li><a href="CAP_theorem" title="CAP theorem">CAP theorem</a></li>

<li><a href="Software_maintenance" title="Software maintenance"> Maintainability</a></li>

<li><a href="Computer_configuration" title="Computer configuration"> Configurability</a></li>

<li><a href="Modularity" title="Modularity">Modularity</a></li>

<li><a href="Durability_(database_systems)" title="Durability (database systems)"> Durability</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Scalability" title="Scalability">Scalability</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Service_statelessness_principle" title="Service statelessness principle"> Stateless</a></li>

<li><a href="Asynchronous_I/O" title="Asynchronous I/O">Asynchronous I/O</a></li>

<li><a href="Loose_coupling" title="Loose coupling">Loose coupling</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Availability" title="Availability">Availability</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Fault_tolerance" title="Fault tolerance">Fault tolerance</a></li>

<li><a href="Failover" title="Failover">Failover</a></li>

<li><a href="Single_point_of_failure" title="Single point of failure">Single point of failure</a></li>

<li><a href="Replication_(computing)" title="Replication (computing)"> Replication</a></li>

<li><a href="Consistent_hashing" title="Consistent hashing">Consistent hashing</a></li>

<li><a href="Circuit_breaker_design_pattern" title="Circuit breaker design pattern"> Circuit breaker</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Latency_(engineering)" title="Latency (engineering)">Latency</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Cache_(computing)" title="Cache (computing)"> Cache</a></li>

<li><a href="Shard_(database_architecture)" title="Shard (database architecture)"> Shard </a></li>

<li><a href="Database_index" title="Database index">Database index</a></li>

<li><a href="Cache_prefetching" title="Cache prefetching"> Pre-caching</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Computer_data_storage" title="Computer data storage"> Storage</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Object_storage" title="Object storage">Object storage</a></li>

<li><a href="Block-level_storage" title="Block-level storage"> Block storage</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;"><a href="Observability_(software)" title="Observability (software)"> Observability</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Logging_(computing)" title="Logging (computing)"> Logging</a></li>

<li><a href="Software_metric" title="Software metric"> Metrics</a></li>

<li><a href="Tracing_(software)" title="Tracing (software)"> Tracing </a></li>

<li><a href="Failure_rate" title="Failure rate"> Error rate </a></li>

<li><a href="Queries_per_second" title="Queries per second">Queries per second </a></li>

<li><a href="Notification_system" title="Notification system">Notification system</a></li>

<li><a href="Anomaly_detection" title="Anomaly detection">Anomaly detection</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related fields</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Computer_engineering" title="Computer engineering">Computer engineering</a></li>

<li><a href="Computer_science" title="Computer science">Computer science</a></li>

<li><a href="Information_science" title="Information science">Information science</a></li>

<li><a href="Project_management" title="Project management">Project management</a></li>

<li><a href="Risk_management" title="Risk management">Risk management</a></li>

<li><a href="Systems_engineering" title="Systems engineering">Systems engineering</a></li></ul>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="font-weight:bold;"><div>

<ul><li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> Category</li>

<li><span class="noviewer" typeof="mw:File"><span title="Commons page"></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Software_engineering" class="extiw external" title="commons:Category:Software engineering">Commons</a></li></ul>

</div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2025-07-09" href="https://en.wikipedia.org/wiki/?title=Object_model&oldid=1299685084">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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