How do you describe a view in DB2?
To define a view, you use the CREATE VIEW statement and assign a name (up to 128 characters in length) to the view. Specifying the view in other SQL statements is effectively like running an SQL SELECT statement. At any time, the view consists of the rows that would result from the SELECT statement that it contains.
What are the 4 environments which can access DB2?
Name the four environments that can access DB2 Example: “The four environments that have access to DB2 include IMS, CICS, TSO and BATCH.”
How do you describe a table in DB2?
Tables are logical structure maintained by Database manager. In a table each vertical block called as column (Tuple) and each horizontal block called as row (Entity). The collection of data stored in the form of columns and rows is known as a table.
What is a DB2 stored procedure?
The DB2 STORED PROCEDURE are the programs which are directly managed by DBMS. The STORED PROCEDURE generally contains SQLs and they can be called by application programs. The STORED PROCEDURE processes the query and returns the result to the application program.
How do I create a view in DB2?
Db2 CREATE VIEW
- First, specify the name of the view which you want to create after the CREATE VIEW keywords. The column names of the view will automatically derive from the select_statement .
- Second, specify a SELECT statement that retrieves data from columns of one or more tables.
How do you view a view in IBM DB2?
DB2 How To get View definition
- SELECT TEXT.
- FROM SYSCAT.VIEWS.
- WHERE VIEWNAME = ‘myview’ and viewschema = ‘myschema’
What is the latest version of Db2 LUW?
On 12 April 2016, IBM announced DB2 LUW 11.1, and in June 2016, it was released. In mid-2017, IBM re-branded its DB2 and dashDB product offerings and amended their names to “Db2”. On June 27, 2019, IBM released Db2 11.5, the AI Database.
What are the datatypes in DB2?
How Db2 compares values of different data types
- String data types. Db2 supports several types of string data: character strings, graphic strings, and binary strings.
- Numeric data types.
- Date, time, and timestamp data types.
- XML data type.
- Large object data types.
- ROWID data type.
- Distinct types.
How do you call a procedure in DB2?
To invoke a stored procedure and to pass a list of parameters to the procedure, use the SQL statement CALL. Your application program can call several stored procedures. After connecting to its server, an application can mix calls to stored procedures with SQL statements sent to the server.
What are DB2 locks?
DB2 locks prevent one program from accessing data that has been changed, but not yet committed, by another program. Locking process is controlled by DB2’s IRLM (Inter System Resource Lock Manager). However, whenever practical, DB2 tries to lock pages without going to the IRLM. This type of lock is called a latch.