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Creating a database
Before you create
your database
When you create a database, the database server creates the following four
dbspaces:
dbspace name
IQ_SYSTEM_MAIN
IQ_SYSTEM_TEMP
IQ_SYSTEM_MSG
SYSTEM
The
dbspace contains the system tables, which hold the schema
SYSTEM
definition as you build your database. It also holds a separate checkpoint log,
rollback log, and optionally a write file, transaction log, and transaction log
mirror, for the Catalog Store.
In addition to these database files, the database server also uses a
Note
temporary file to hold information needed during a session. This temporary file
is not the same as the Temporary IQ Store, and is not needed once the database
server shuts down. The file has a server-generated name with the extension
.tmp. Its location is determined by the TEMP environment variable, or the
ASTMP environment variable on UNIX.
You create a database using either the
Central. Once the database is created, you can connect to it and build the tables
and other objects that you need in the database.
In order to create a database, you must:
•
Start the database server
•
Start either Sybase Central or DBISQL
To create a database in DBISQL, you need to connect to an existing database,
or else start the utility database, a phantom database with no database files and
no data. You must start the utility database before creating new databases if no
databases are built yet. For information on the utility database and its security,
see the Adaptive Server IQ Installation and Configuration Guide.
If you are creating an IQ database for the first time, see the Introduction to
Adaptive Server IQ for assistance.
CHAPTER 3
Working with Database Objects
Contents
Main (permanent) IQ
Store file
Temporary IQ Store file
Message log file
Catalog Store file
CREATE DATABASE
Default operating
system file name
dbname.iq
dbname.iqtmp
dbname.iqmsg
dbname.db
statement or Sybase
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