RAD Studio for Microsoft .NET - Embarcadero Technologies

1.1 Developing Database Applications with RAD Studio for Microsoft .NET Getting Started with InterBase Express
TIBTransaction Provides discrete transaction control over a one or more
database connections in a database application.
TIBUpdateSQL Provides an object for updating read-only datasets when
cached updates are enabled.
TIBDataSet Executes InterBase SQL statements.
TIBSQL Provides an object for executing an InterBase SQL
statement with minimal overhead.
TIBDatabaseInfo Returns information about the attached database.
TIBSQLMonitor Monitors dynamic SQL passed to the InterBase server.
TIBExtract Fetches metadata from an InterBase server.
TIBCustomDataSet The base class for all datasets that represent data fetched
using InterBase Express.
Though they are similar to BDE components in name, the IBX components are somewhat different. For each component with a
BDE counterpart, the sections below give a discussion of these differences.
There is no simple migration from BDE to IBX applications. Generally, you must replace BDE components with the comparable
IBX components, and then recompile your applications. However, the speed you gain, along with the access you get to the
powerful InterBase features make migration well worth your time.
IBDatabase
Use a TIBDatabase component to establish connections to databases, which can involve one or more concurrent transactions.
Unlike BDE, IBX has a separate transaction component, which allows you to separate transactions and database connections.
To set up a database connection:
1. Drop an IBDatabase component onto a form or data module.
2. Fill out the DatabaseName property. For a local connection, this is the drive, path, and filename of the database file. Set the
Connected property to true.
3. Enter a valid username and password and click OK to establish the database connection.
user_name=sysdba
password=masterkey
IBTransaction
Warning: Tip: You can store the username and password in the IBDatabase component's Params
property by setting the LoginPrompt property to false after logging in. For example, after logging in
as the system administrator and setting the LoginPrompt property to false, you may see the
following when editing the Params property:
Unlike the Borland Database Engine, IBX controls transactions with a separate component, TIBTransaction. This powerful
feature allows you to separate transactions and database connections, so you can take advantage of the InterBase two-phase
commit functionality (transactions that span multiple connections) and multiple concurrent transactions using the same
connection.
Use an IBTransaction component to handle transaction contexts, which might involve one or more database connections. In
most cases, a simple one database/one transaction model will do.
To set up a transaction:
1. Set up an IBDatabase connection as described above.
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