What is the purpose of bind in DB2?
What is the purpose of bind in DB2?
BIND is sort of like a compiler for the embedded SQL code, and the output of the “compile” is a package . In order to BIND the SQL into an executable “package”, the BIND process attaches to DB2 and does a few things: Verifies that the current AuthID is authorized to perform a bind.
What is dynamic SQL in DB2?
With dynamic SQL, Db2 prepares and executes the SQL statements within a program while the program is running. Dynamic SQL is a good choice when you do not know the format of an SQL statement before you write or run a program.
What is bind process?
The bind process establishes a relationship between an application program and its relational data. This process is necessary before you can execute your program. During the precompilation process, the DB2® precompiler produces both modified source code and a database request module (DBRM) for each application program.
What is rebind in Db2?
Rebinding is the process of recreating a package for an application program that was previously bound. You must rebind packages if they have been marked invalid or inoperative or if the database statistics have changed since the last binding.
What is static and dynamic SQL in DB2?
In a DB2® database, you can execute SQL statements statically or dynamically. Static execution requires configuring the database to run an SQL statement but delivers more consistent performance. Dynamic execution of SQL statements is more flexible because it does not require any special preparation on the database.
What is dynamic and static SQL?
Static or Embedded SQL are SQL statements in an application that do not change at runtime and, therefore, can be hard-coded into the application. Dynamic SQL is SQL statements that are constructed at runtime; for example, the application may allow users to enter their own queries.
What is bind and rebind in DB2?
You can bind or rebind the DB2® Plans, as needed, by selecting Option 5 on the main Install menu. The introduction of DB2 Package Versioning enables you to issue a PACKAGE BIND replace, without affecting the existing plan bind.
What is rebind in DB2?
What is DB2 bind of COBOL?
STEP 4 – DB2 BIND The bind process reads the DBRM that was created in the precompile and prepares an access path to the data. This access path, along with the consistency token, is stored in the DB2 catalog as a Package. Every Package is bound into a Package List, or Collection.