Search results
Results from the WOW.Com Content Network
An OLE DB-ODBC bridge consists of an OLE DB Provider which uses the services of an ODBC driver to connect to a target database. This provider translates OLE DB method calls into ODBC function calls. Programmers usually use such a bridge when a given database lacks an OLE DB provider, but is accessible through an ODBC driver.
Database testing mainly deals with finding errors in the databases so as to eliminate them. This will improve the quality of the database or web-based system. Database testing should be distinguished from strategies to deal with other problems such as database crashes, broken insertions, deletions or updates.
Performance overhead since the calls have to go through the JDBC (java database connectivity) bridge to the ODBC (open database connectivity) driver, then to the native database connectivity interface (thus may be slower than other types of drivers). The ODBC driver needs to be installed on the client machine.
Some basic steps are required in order to be able to access and manipulate data using ADO : Create a connection object to connect to the database. Create a recordset object in order to receive data in. Open the connection; Populate the recordset by opening it and passing the desired table name or SQL statement as a parameter to open function.
Database access services are often characterised as middleware. Some of them are language specific implementations and support heterogeneous features and other related communication features. [ 7 ] Examples of database-oriented middleware include ODBC , JDBC , and transaction processing monitors.
The driver that Microsoft provides in MDAC is called the SQL Server ODBC Driver (SQLODBC), and (as the name implies) is designed for Microsoft's SQL Server. It supports SQL Server v6.5 and upwards. [3] ODBC allows programs to use SQL requests that will access databases without having to know the proprietary interfaces to the databases. It ...
The product provides several standard interfaces (ODBC, JDBC, and ADO.NET) and a number of special interfaces such as PHP and Perl. The engine supports stored procedures , user functions (using Watcom SQL , T-SQL , Java , or C / C++ ), triggers , referential integrity , row-level locking, replication , high availability , proxy tables , and ...
SQL refers to Structured Query Language, a kind of language used to access, update and manipulate database. In SQL, ROLLBACK is a command that causes all data changes since the last START TRANSACTION or BEGIN to be discarded by the relational database management systems (RDBMS), so that the state of the data is "rolled back" to the way it was before those changes were made.