Users' questions

What is Syscat tables in DB2?

What is Syscat tables in DB2?

SYSTABLES is the system catalog table, while SYSCAT. TABLES is a system catalog view. It depends of what you need, but you may use SYSIBM.

What is Syscat in DB2?

TABLES catalog view. Each row represents a table, view, alias, or nickname. Each table or view hierarchy has one additional row that represents the hierarchy table or hierarchy view that implements the hierarchy. Catalog tables and views are included.

What are the Sysibm tables?

The qualifier for all catalog table names is SYSIBM. Each row represents an audit policy. Contains a row for each execution of an autonomic procedure. Contains cardinality, frequency, and histogram statistics for a single column or a column group.

Which catalog table is used to store details of all the tables in DB2?

The DB2 catalog consists of tables of data about everything defined to the DB2 system, including table spaces, indexes, tables, copies of table spaces and indexes, and storage groups. The system database DSNDB06 contains the DB2 catalog.

What is table type A in db2?

This makes sense because tables of type ‘A’ are an alias to another table. If you want to find the columns for a table of type ‘A’, look in the BASE_TABSCHEMA and BASE_TABNAME columns to find name of the schema and table that the alias is referencing. If you look up that table, it will be in syscolumns.

What is Sysibm SYSDUMMY1?

As the name implies, SYSIBM.SYSDUMMY1 is a dummy table. It contains one row and one column, which is named IBMREQD and contains a value of ‘Y’. SYSIBM.SYSDUMMY1 is used extensively in SQL examples on the web and in the Knowledge Center.

Is Db2 A Rdbms?

IBM Db2 is a family of data management products, including database servers, developed by IBM. It is a Relational Database Management System (RDBMS) which supports object-oriented features and non relational structure with XML. Db2 is designed to store, analyze and retrieve the data efficiently.

Which table controls DB2?

Historical analysis (QUERY_ANALYSIS) control table. Contains data generated by historical analysis using DB2 Explain data. This table is populated when historical data generation is performed. Records are deleted from this table when the corresponding entry in the TRACK_QUERY_INFO table is deleted.

What is a Catalogue table?

A catalog table is one that returns information about another table, or data source. It is similar to what MariaDB commands such as DESCRIBE or SHOW do.

Is DB2 A Rdbms?

How do I get the current date in DB2?

To get the current date, time, and timestamp using SQL, reference the appropriate DB2 registers:

  1. SELECT current date FROM sysibm.sysdummy1 SELECT current time FROM sysibm.sysdummy1 SELECT current timestamp FROM sysibm.sysdummy1.
  2. VALUES current date VALUES current time VALUES current timestamp.

Is DB2 still used?

DB2 is most often used by companies with 50-200 employees and 1M-10M dollars in revenue. Our data for DB2 usage goes back as far as 6 years. If you’re interested in the companies that use DB2, you may want to check out MySQL and Microsoft SQL Server as well.