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SQL CE databases can support ACID-compliance, but do not meet the durability requirement by default because AutoFlush buffers changes in memory (including enlisted ambient transactions and explicit SQL CE transactions that do not override the Commit() call with an CommitMode.Immediate value). Therefore, committed transaction changes can be lost. To meet the durability requirement the commit call on the transaction must specify the immediate flag.cite-ref-msdnautoflush-13-0[13] Like Microsoft SQL Server, SQL CE supports transactions, referential integrity constraints, locking as well as multiple connections to the database store.cite-ref-lap1-4-1[4] However, nested transactions are not supported, even though parallel transactions (on different tables) are.cite-ref-14[14] The current release does not support stored procedurescite-ref-lap1-4-2[4] or native XML data type either.cite-ref-jad-5-2[5] It uses a subset of T-SQLcite-ref-datasheet-2-4[2] for querying and due to lack of XML support, XQuery is not supported either.cite-ref-jad-5-3[5] Queries are processed by an optimizing query processor.cite-ref-feat-15-0[15] SQL CE databases also support indexing, as well as support remote data replication (local caching of data in remote databases) and merge replication (bidirectional synchronization with master databases).cite-ref-16[16]

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