blueshell Active Tables for .NET 

Use VB 5/6 as well as all the languages of .NET (like C#, VB.NET and J#) to connect to various databases including Oracle, MS SQL Server, MySQL, Jet and more using ADO. Develop reliable and easy-to-use database applications in no time at all!
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Oracle-to-MSSQL 

Oracle-to-MSSQL is a program to move Oracle databases to MS SQL server. All Oracle data types (except BFILE and MLSLABEL) and attributes are supported. The program has easy-to-use wizard style interface and supports command line.
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MSSQL-to-Oracle 

MSSQL-to-Oracle is a program to migrate MS SQL databases to Oracle server. All MS SQL data types and attributes are supported. The program has easy-to-use wizard style interface and works with all versions of Oracle server.
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MSSQL-to-MySQL 

MSSQL-to-MySQL is a program to move MS SQL databases to MySQL server. All MS SQL data types and attributes are supported. The program has easy-to-use wizard style interface and works with all versions of MySQL server.
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Access-to-Oracle 

Access-to-Oracle is a program to move MS Access databases to Oracle server. All MS Access data types and attributes are supported.
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Access-to-MSSQL 

Access-to-MSSQL is a program to move MS Access databases to MSSQL server. All MS Access data types and attributes are supported.
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