Column Name | Type | Length | Nulls | Defaults |
---|---|---|---|---|
word | char | 20 | yes | no |
definition | char | 250 | yes | no |
Word | Definition |
---|---|
aggregate function | An aggregate operator which first groups rows on the basis of the value of a column or list of columns called the by‑list, before computing the aggregate for each value of the by‑list. |
aggregate operator | An aggregate operator is a computation performed on a column across all rows in a table. Common aggregate operators are SUM, COUNT, and AVG. Aggregate operators can have qualifications to limit the number of rows used in the calculation. |
attribute | Another term for a column in a table. |
buffer | Another term for the Ingres workspace. |
column | All data in Ingres is saved in the form of tables made up of rows and columns. In traditional database terminology, a column is a field in a record. |
comparison operator | A symbol which specifies the kind of comparison to make in a qualification, such as > (for greater than), or = (for equality check). |
compressed | Any of the Ingres internal storage structures can be compressed. Compression reduces the storage required for a table, by deleting all trailing blanks in character columns. |
Column Name | Type | Length | Nulls | Defaults |
---|---|---|---|---|
Word | char | 20 | yes | no |
Ref | char | 20 | yes | no |
Word | Ref |
---|---|
aggregate function | aggregate operator |
aggregate function | aggregation |
aggregate function | by list |
aggregate function | computation |
aggregate operator | aggregate function |
aggregate operator | aggregation |
aggregate operator | computation |
Attribute | column |
Buffer | workspace |
Column | attribute |
Column | domain |
Column | field |
comparison operator | qualification |
comparison operator | restriction |
Compressed | character strings |
Compressed | compression |
Compressed | storage structures |
Dictionary of Ingres Terms | Page 1 | Related Term |
Word | Definition | |
aggregate function | An aggregate operator which first groups rows on the basis of the value of a (list of) column(s) (called the "by-list"), before computing the aggregate for each value of the "by-list." | aggregate operator aggregation by list computation |
aggregate operator | An aggregate operator is a computation performed on a column across all rows in a table. Common aggregate operators are SUM, COUNT, and AVG. Aggregate operators can have qualifications to limit the number of rows used in the calculation. | aggregate function aggregation computation |
attribute | Another term for "column" in a table. | column |
buffer | Another term for the Ingres "workspace". | workspace |
column | All data in Ingres is saved in the form of tables made up of rows and columns. In traditional database terminology, a "column" is a "field" in a record. | attribute domain field |
comparison operator | A symbol which specified the kind of comparison to make in a qualification, such as ">" (for greater than), or "=" (for equality check). | qualification restriction |
compressed | Any of the Ingres internal storage structures can be compressed. Compression reduces the storage required for a table, by deleting all trailing blanks in character columns. | character strings compression storage structure |