Database configuration involves the creation and maintenance
of database tables, and columns within the tables.
You can create and drop databases, and you can create, drop, and
edit (or alter) database tables and columns.
Restriction: You are not permitted to make changes to
system databases. In Netcool/OMNIbus Administrator, system
databases are shown with a lock icon next to them.
Creating databases
You can use Netcool/OMNIbus Administrator to
create and manage ObjectServer databases.
Creating tables
A table has a fixed number of data-typed columns. The name
of each column is unique to the table. A table contains zero or more
rows of data in the format defined by the table's column list. The
fully-qualified table name includes the database name and the table
name, separated by a period.
Adding and editing table columns
You can add new columns to ObjectServer
tables or edit existing columns. The maximum number of columns in
a table is 512, excluding the system-maintained columns. The maximum
row size for a table, which is the sum of the length of the columns
in the row, is 64 KB. You cannot add PRIMARY KEY columns to existing
tables.
Indexing table columns
Use indexes to improve the performance of the ObjectServer
databases. The use of well-designed indexes can reduce or eliminate
the need for full table scans during the execution of SQL queries,
and result in faster data retrieval. To determine the effectiveness
of an index, check the index selectivity.
Deleting databases
You are not permitted to drop system databases, which have
a lock icon next to them.
Deleting tables
You are not permitted to delete tables in system databases.
Deleting table columns
You are not permitted to delete primary key columns or
columns in system tables.