0.14: What is data access? (brief description)
Applications running on the application server might need to
store data in a database. In such a case, data access settings
are required, including JDBC providers and data source configurations.
In addition, for Advanced Edition (non-Single Server), the WebSphere administrative server stores the
administrative configuration in a database that you configure
during product installation. The product Samples Gallery also
relies on a database. You might decide to keep your application
data in the same database as the one being used by the product.
- data store or database
- A relational database
such as DB2 or Oracle, or another product that manages and accesses data
- application database
- Holds data accessed by applications managed with IBM WebSphere
Application Server
- administrative database
- Holds data for the IBM WebSphere Application Server administrative
server
(Applies to Advanced Edition, but not to Advanced Single Server Edition)
- JDBC provider
or JDBC resource provider
- Software that enables Java applications, such
as those supported by the product, to connect to
JDBC-compliant databases
through the use of DataSource objects
- JDBC provider configuration or
JDBC resource provider configuration
- An administrative configuration that specifies the location of
the JDBC Data Source code
for connecting Java applications to a database
- data source configuration
- An administrative configuration that establishes a pool of connections
to a database, for use by Java components. It also specifies connection
pooling parameters, such as the maximum number of connections to maintain
in the pool.
A data source instance (and the associated connection pool)
is created for every application server instance that uses the
data source. The connection pool associated with a data source
is in turn shared by all application components that are running in an application server.
- connection pooling
- A scheme that addresses inefficiencies in obtaining and
releasing database connections