Adaptive Server Enterprise and Sybase IQ have different system catalogs, reflecting the different uses for the two products.
In Adaptive Server Enterprise there is a single master database containing a set of system tables holding information that applies to all databases on the server. Many databases may exist within the master database, and each has additional system tables associated with it.
In Sybase IQ, each database exists independently, and contains its own system tables. There is no master database that contains system information on a collection of databases. Each server may run several databases at a time, dynamically loading and unloading each database as needed.
The Adaptive Server Enterprise and Sybase IQ system catalogs are different. The Adaptive Server Enterprise system tables and views are owned by the special user dbo, and exist partly in the master database, partly in the sybsecurity database, and partly in each individual database; the IQ system tables and views are owned by the special user SYS and exist separately in each database.
To assist in preparing compatible applications, Sybase IQ provides a set of views owned by the special user dbo, which correspond to the Adaptive Server Enterprise system tables and views. Where architectural differences make the contents of a particular Adaptive Server Enterprise table or view meaningless in a IQ context, the view is empty, containing just the column names and data types.
Table 11-1, Table 11-2, and Table 11-3 list the Adaptive Server Enterprise system tables and their implementation in the IQ system catalog. The owner of all tables is dbo in each DBMS.
Table name |
Description |
Data? |
|---|---|---|
sysalternates |
One row for each user mapped to a database user |
No |
syscolumns |
One row for each column in a table or view, and for each parameter in a procedure |
Yes |
syscomments |
One or more rows for each view, rule, default, and procedure, giving SQL definition statement |
Yes |
sysconstraints |
One row for each referential and check constraint associated with a table or column |
No |
sysdepends |
One row for each procedure, view, or table that is referenced by a procedure, view |
No |
sysindexes |
One row for each clustered or nonclustered index, and one row for each table with no indexes, and an additional row for each table containing text or image data. |
Yes |
syskeys |
One row for each primary, foreign, or common key; set by user (not maintained by Adaptive Server Enterprise) |
No |
syslogs |
Transaction log |
No |
sysobjects |
One row for each table, view, procedure, rule, default, log, and (in tempdb only) temporary object |
Contains compatible data only |
sysprocedures |
One row for each view, rule, default, and procedure, giving internal definition |
No |
sysprotects |
User permissions information |
No |
sysreferences |
One row for each referential integrity constraint declared on a table or column |
No |
sysroles |
Maps server-wide roles to local database groups No |
|
syssegments |
One row for each segment (named collection of disk pieces) |
No |
systhresholds |
One row for each threshold defined for the database |
No |
systypes |
One row for each system-supplied and user-defined data type |
Yes |
sysusermessages |
One row for each user-defined message |
Yes (this is an IQ system table) |
sysusers |
One row for each user allowed in the database |
Yes |
Table name |
Description |
Data? |
|---|---|---|
syscharsets |
One row for each character set or sort order |
No |
sysconfigures |
One row for each configuration parameter that can be set by a user |
No |
syscurconfigs |
Information about configuration parameters currently being used by the server |
No |
sysdatabases |
One row for each database on the server |
No |
sysdevices |
One row for each tape dump device, disk dump device, disk for databases, and disk partition for databases |
No |
sysengines |
One row for each server currently online |
No |
syslanguages |
One row for each language (except U.S. English) known to the server |
No |
syslocks |
Information about active locks |
No |
sysloginroles |
One row for each server login that possesses a system- defined role |
No |
syslogins |
One row for each valid user account |
Yes |
sysmessages |
One row for each system error or warning |
No |
sysprocesses |
Information about server processes |
No |
sysremotelogins |
One row for each remote user |
No |
syssrvroles |
One row for each server-wide role |
No |
sysservers |
One row for each remote server |
No |
sysusages |
One row for each disk piece allocated to a database |
No |
Table name |
Description |
Data? |
|---|---|---|
sysaudits |
One row for each audit record |
No |
sysauditoptions |
One row for each global audit option |
No |
