......................................53 5.5.3. Adding a Constraint............................................................................................53 5.5.4. Removing a Constraint ......... ..............................................................................53 5.5.5. Changing a Column’s Default Value...................................................................54 5.5.6. Changing .............................................................................................1484 53. Database Physical Storage .......................................................................

.........................................53 5.7.1. Creating a Schema .......................................................................................53 5.7.2. The Public Schema ............... .............................................................................................1398 53. Database Physical Storage ....................................................................... ...........................................................................................1579 E.53. Release 8.1.19 ..................................................................................

...................................................................................................53 5.5. Modifying Tables............................................................................. .............................................................................................1516 53. Database Physical Storage ....................................................................... ...........................................................................................1731 E.53. Release 8.2.18 ..................................................................................

Constraints..............................................................................................53 5.3.4. Primary Keys............................................................................... .............................................................................................1619 53. Database Physical Storage ....................................................................... ...........................................................................................1844 E.53. Release 8.2.18 ..................................................................................

Not-Null Constraints....................................................................................53 5.3.3. Unique Constraints......................................................................... Procedural Language Handler .......................................................................1931 53. Writing A Foreign Data Wrapper .................................................................. Francisco | 46 | 50 | 0.25 | 1994-11-27 | San Francisco | (-194,53) San Francisco | 43 | 57 | 0 | 1994-11-29 | San Francisco | (-194,53) (2 rows) Observe two things about the result set: • There is no

Mixed Notation.........................................................................................53 5. Data Definition............................................................................... Language Handler ..............................................................................2051 53. Writing A Foreign Data Wrapper .................................................................. Francisco | 46 | 50 | 0.25 | 1994-11-27 | San Francisco | (-194,53) San Francisco | 43 | 57 | 0 | 1994-11-29 | San Francisco | (-194,53) (2 rows) 2. In some database systems, including older versions

.......................................53 5.5.7. Renaming a Column ...........................................................................................53 5.5.8. Renaming a Table ............... ............................53 5.6. Privileges .........................................................................................................................53 5.7. Schemas................ ...........................................................................................1431 E.53. Release 6.3.2 ...................................................................................

......................................53 5.5.3. Adding a Constraint............................................................................................53 5.5.4. Removing a Constraint ......... ..............................................................................53 5.5.5. Changing a Column’s Default Value...................................................................54 5.5.6. Changing .............................................................................................1340 53. BKI Backend Interface............................................................................

........................................53 5.3.4. Primary Keys................................................................................................53 5.3.5. Foreign Keys.................... .............................................................................................1597 53. GIN Indexes ..................................................................................... ...........................................................................................1833 E.53. Release 8.3.17 ..................................................................................

...................................................................................................53 5.3. Constraints.................................................................................. .............................................................................................1704 53. GIN Indexes ..................................................................................... ...........................................................................................1954 E.53. Release 8.3.17 ..................................................................................