G - Physics – 06 – F
Patent
G - Physics
06
F
354/112
G06F 15/40 (1990.01)
Patent
CA 1304506
AT9-88-013 SYSTEM AND METHOD FOR EFFICIENT ANALYSIS OF RELATIONAL DATABASE OBJECTS Abstract A plurality of packed descriptions is provided as a column in a table each entry containing data defining attributes associated with a different object (such as a table or view defined to the database) and all its component objects (such as related columns and indexes). Accessing the row corresponding to a particular object returns a description of all of the attributes of the object's component objects, as well as information describing the object itself. The packed description information is redundantly stored conventionally in other system catalogs for use IN at IN querying physical definitions of objects in a manner consistent with other database products. The database state information comprising the packed descriptions is retained in internal format whereas the correlative redundant information is in a user-readable external format. By denormalizing the schema for schema data whereby identifying relationships between objects is simplified, time required for compilation of statements referencing objects is substantially, reduced. All information concerning attributes of an object specified in statement and its component objects necessary, to compile the statement may thereby be fetched from the packed description field corresponding to the object in one I/O operation. Objects descriptions must otherwise be retrieved from numerous I/Os to separate system catalogs and rows collectively containing the descriptions.
593250
Chang Philip Y.
Coyle Daniel J. Jr.
Howie Lauren D.
Lindsay Bruce G.
Chang Philip Y.
Coyle Daniel J. Jr.
Howie Lauren D.
International Business Machines Corporation
Kerr Alexander
LandOfFree
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