## Database Terms

To determine information about your database system, its objects, structures, status information, and so on, you have to evaluate the relevant system tables.

A list of database terms and references to the system tables that can provide the information on the terms is provided below. The terms are listed in alphabetical order.

| Term | Explanation | System Table
C | Char set (character set) | MapChar set | MAPCHARSETS
| Character Set | MapChar set | MAPCHARSETS
| Column | definition, domain, default value primary key privilege indexed in the referential constraint of a table in view table | COLUMNS INDEXCOLUMNS FOREIGNKEYCOLUMNS VIEWCOLUMNS
| Column | definition, domain, default value primary key privilege indexed in the referential constraint of a table in view table | COLUMNS INDEXCOLUMNS FOREIGNKEYCOLUMNS VIEWCOLUMNS
| Computer | name utilization | USERS MACHINEUTILIZATION
| Constraint | NOT NULL columns primary key on a column or table on a domain referential UNIQUE | COLUMNS CONSTRAINTS DOMAINCONSTRAINTS FOREIGNKEYS INDEXES
D | Database instance | of the current database session information | USERS INSTANCE
| Database parameters | currently valid | ACTIVECONFIGURATION
| Database Procedure | name and other information parameters | DBPROCEDURES DBPROCPARAMS
| Database session | your own and all active roles active in the database session | SESSIONS SESSION_ROLES
| Default value | for a column for a domain for a role | COLUMNS DOMAINS ROLES
| Default value | for a column for a domain for a role | COLUMNS DOMAINS ROLES
| Domain | name and other information constraint for column definition | DOMAINS DOMAINCONSTRAINTS COLUMNS
| Domain | name and other information constraint for column definition | DOMAINS DOMAINCONSTRAINTS COLUMNS
F | Foreign key (referential constraint) | name and other information columns | FOREIGNKEYS FOREIGNKEYCOLUMNS
I | Identification | internal identification of a table internal identification of a user | TABLES USERS
| Isolation level | of the current database session | SESSIONS
K | Keys | primary key secondary key foreign key (referential constraint) | COLUMNS FOREIGNKEYCOLUMNS FOREIGNKEYS
L | Lock | currently requested | LOCKS LOCK_WAITS
| Lock | currently requested | LOCKS LOCK_WAITS
| Log Area | Utilization | LOGSTATISTICS
| Log Queue | ID and other information | LOGQUEUESTATISTICS
M | MapChar set | name and other information | MAPCHARSETS
| Migration (Upgrade) | log | POSTUPGRADECHECKLIST
O | Operating system | of the database instance | VERSION
P | Parameters | of a database procedure database parameter | DBPROCPARAMS ACTIVECONFIGURATION
| Privilege | of a role of a column of a schema of a table | ROLEPRIVILEGES COLUMNS SCHEMAPRIVILEGES TABLES TABLEPRIVILEGES
R | Referential constraint | name and other information columns | FOREIGNKEYS FOREIGNKEYCOLUMNS
| Release (version) | database software | VERSION
| Result table | their existence | TABLES
| Role | name and other information privileges active in the database session | ROLES ROLEPRIVILEGES SESSION_ROLES
S | Schema | name and other information privileges | SCHEMAS SCHEMAPRIVILEGES
| Sequence | current value | SEQUENCES
| Server node (computer) | name utilization | USERS MACHINEUTILIZATION
| Session | your own and all active roles active in the database session | SESSIONS SESSION_ROLES
| SQL mode | of the current database session | SESSIONS
| Statistics | time and sample value from the last time UPDATE STATISTICS ran | TABLES
| Synonym | synonyms existence | SYNONYMS TABLES
T | Table | name and other information definition synonym privilege view definition constraint referential constraint index view table primary key secondary key triggers | TABLES COLUMNS SYNONYMS TABLEPRIVILEGES VIEWCOLUMNS CONSTRAINTS FOREIGNKEYS INDEXES VIEWS COLUMNS FOREIGNKEYCOLUMNS TRIGGERS
| Timeout | of the current database session | SESSIONS
| Triggers | name and other information | TRIGGERS
U | UNIQUE | Index | INDEXES
| Upgrade | logs | POSTUPGRADECHECKLIST
| User | defined current | USERS SESSIONS
| User | defined current | USERS SESSIONS
V | Version | database software and operating system | VERSION
| View Table | name and other information definition existence synonym tables and columns | VIEWS VIEWDEFS TABLES SYNONYMS VIEWCOLUMNS