Accessing Database Via MTS Components
What is Connection Pooling?
Connection pooling is recycling of available database connections.Connection pooling is
always per user basis i.e. connections set by user A can not be used by user B. Generally,
a seperate NT account is create for use by MTS components.
What is general rule while using database connections?
Connect to database as late as possible and release the connection as early as possible
What are Firehose cursors?
Firehose cursors are ADO recordset objects with following properties :
- Cursorlocation : aduseServer
- Cursortype : adOpenForwardOnly
- LockType : adLockReadOnly
- Cachesize : 1
When such cursors are created the recordset values are returned generally using
GetString or GetRows method of the recordset
What is disconnected recordset?
Disconnected recordsets are ADO recordsets with following properties
- Cursorlocation : adUseClient
- Cursortype : adOpenStatic
- LockType : adLockBatchOptimistic
Also, you need to set the activeconnection to nothing once you run the query.
Note that update method on disconnected recordset updates records from the recordset
only. To update the changes to the database you must call updatebatch method.