Selectivity, the ability to notice/distinguish small differences. Also the words selectiveness, refinement and discrimination are used. Discrimination is also a cultural term.
In a database index, a measure for how many records will be retrieved for a given value of an attribute.
This is a disambiguation page — a list of pages that otherwise might share the same title. If an article link referred you here, you might want to go back and fix it to point directly to the intended page.
A SELECT statement in SQL returns a result set of records from one or more tables.
SELECT * FROM T; will result in all the elements of all the rows of the table being shown.
SELECT C1 FROM T; will result in the elements from the column C1 of all the rows of the table being shown — in Relational algebra terms, a projection will be performed.
Selection, in the context of evolution, individuals with advantageous or "adaptive" traits tend to be more successful than their peers reproductively.
Cable select, a setting on IDE devices such as hard drives and CDROMs that allows the position of the drive on the cable to select whether the drive will act as master or slave.
Feeds |
Contact