Options: Indexes are created to enforce uniqueness on columns., Indexes are created to enable fast retrieval by column values., Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes., Indexes are created with the ALTER TABLE command.
Options: (A)an application that captures TCP/IP data packets, which can maliciously be used to capture passwords and other data while it is in transit either within the computer or over the network. (B) a situation in which one person or program successfully masquerades as another by falsifying data and thereby gaining illegitimate access. (C) a toolkit for hiding the fact that a computerâ€™s security has been compromised, is a general description of a set of programs which work to subvert control of an operating system from its legitimate (in accordance with established rules) operators. (D) None of these 1
Which of the following is true concerning triggers?
Options: You do not create them with SQL., They execute against only some applications that access a database., They have an event, condition, and action., They cannot cascade (cause another trigger to fire).
Options: (A)It do not need the control of the human operator during their execution. (B) An arrow in a multi-dimensional space. It is a quantity usually characterized by an ordered set of scalars. (C) The validation of a theory on the basis of a finite number of examples. (D) None of these 124 | 9
Options: is always less expensive than flat-rate service, is less expensive than flat-rate service only when the number of calls is large and the duration of each is short, is less expensive than flat-rate service only when the number of calls is small and the duration of each is long, is never less expensive than flat-rate service