Using Open SQL/JDBC in the Persistence
Layer
Use
The aim of Open SQL for Java is to allow application developers to implement database access independently of a particular database system. This goal is achieved by:
● Defining a subset of SQL that is comprehensible for all database systems.
More information: Open SQL Grammar
● Defining a subset of JDBC that is compatible with all database systems. This section deals with Open SQL/JDBC.
Although JDBC is a standard that is recognized by the Java community, existing implementations of various database vendors differ in details. Open SQL/JDBC is the JDBC-compatible implementation of the essential parts of the JDBC standard. This implementation allows you to access in a portable way all database systems that are supported by SAP. Open SQL/JDBC implements the interfaces from the Java package java.sql.*.
Using Open SQL/JDBC, you can select and modify data in existing database tables. The tables are created in the Java Dictionary.
More information
about Java Dictionary:
Providing Java
Dictionary Tables and Data Types
More information about the most important aspects of Open SQL/JDBC:
Semantics of the Data Types DATE, TIME, and TIMESTAMP
Procedure
...
1. Get a connection to the database.
More information: Getting a Connection to the Database
2. Insert data into a table
More information: Inserting Data Into a Table
3. Retrieve data from the database
More information: Using Queries
More Information