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Data Stores Supported in Server Mode When Using XPO

This topic covers the databases supported in server mode when using the eXpress Persistent Objects (XPO) library. The databases supported by XPO are as follows:

Database Engine Version(s) XPO Data Store Adapter Database Provider Assembly
Advantage Advantage Database Server v9.1, Advantage Database Server v10.1, Advantage Database Server v11.1 AdvantageConnectionProvider Advantage.Data.Provider.dll
ASA SQL Anywhere 16, SQL Anywhere 17 AsaConnectionProvider iAnywhere.Data.SQLAnywhere.dll
ASE Sybase Adaptive Server 12, Sybase Adaptive Server 15.5, Sybase Adaptive Server 16 AseConnectionProvider Sybase.Data.AseClient.dll
DB2 DB2 9.7.4 DB2ConnectionProvider IBM.Data.DB2.dll
Firebird Firebird 1.5, Firebird 2.1.3 FirebirdConnectionProvider FirebirdSql.Data.Firebird.dll
MSAccess Microsoft Jet AccessConnectionProvider System.Data.dll
MSSqlServer Microsoft SqlServer 7.0, Microsoft SqlServer 2000, MS SQL Server 2000 Desktop Engine (MSDE 2000), Microsoft SQL Server 2005,
SQL Server 2005 Express Edition, SQL Server 2008, SQL Azure™ Database, SQL Server 2008 R2, SQL Server 2008 R2 Express, SQL Server 2012, SQL Server 2012 Express (including LocalDB), SQL Server 2014, SQL Server 2014 Express (including LocalDB), SQL Server 2016, SQL Server 2016 Express (including LocalDB)
MSSqlConnectionProvider System.Data.dll
MSSqlServerCE Microsoft SqlServer 2005 Mobile, SQL Server 2005 Compact Edition (Microsoft SqlServer 2005 Everywhere Edition CTP), SQL Server Compact 3.5,
SQL Server Compact 4.0
MSSqlCEConnectionProvider System.Data.SqlServerCe.dll 3.5.0
System.Data.SqlServerCe.dll 4.0.8482.1
MySql MySQL Server 4.1, MySQL Server 5.0, MySQL Server 5.1, MySQL Server 5.5 MySqlConnectionProvider MySql.Data.dll
Oracle Oracle 9i, Oracle 10g, Oracle 11g OracleConnectionProvider
Oracle.ManagedDataAccess.dll 4.121.20
Pervasive Pervasive PSQL 9, Pervasive PSQL 10, Pervasive PSQL 11 PervasiveSqlConnectionProvider Pervasive.Data.SqlClient.dll
Postgres PostgreSQL 7, PostgreSQL 8, PostgreSQL 9 PostgreSqlConnectionProvider Npgsql.dll
SQLite SQLite 3 SQLiteConnectionProvider System.Data.SQLite.dll
VistaDB VistaDB 4, VistaDB 5 VistaDBConnectionProvider VistaDB.4.dll

Note that the database provider assembly versions listed in the table above are the versions that have been tested with the current XPO version. Since XPO loads ADO.NET provider assemblies dynamically, you can use any specific version of the provider.


XPO does not support tables with multi-column (compound) keys or indexes in ASE databases. To avoid exceptions when connecting to ASE databases containing these tables, use one-column keys or indexes.



When implementing a server mode, binding a grid control to a file-based database (e.g., MS Access, VistaDB and SQLite) is not recommended. The performance of these databases is slow, and you will notice a significant reduction in transaction speed, data security and integrity when using them, compared to server-based database engines (e.g., Microsoft SQL Server and Oracle).

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