Answer the following statements true (T) or false (F)
1. In SQL the REFERENCES qualifier ensures referential integrity between tables.
2. SQL statements that are stored in the DBMS are called resident queries.
3. In a transaction, all updates to the database must be successfully executed.
4. The term commit refers to undoing changes in a database.
1. TRUE
2. FALSE
3. TRUE
4. FALSE
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A(n) ________ is a hardware device that enables an individual to read data from a device, such as a hard drive, without writing to that device
Fill in the blank(s) with the appropriate word(s).
When using linked lists:
a. New records are always added to the bottom of the file. b. Deleting data is accomplished by moving all records up, after the deleted record, therefore, eliminating the deleted record. c. When data is deleted, the links are changed to jump over the deleted record. The deleted record number is entered into the empty list. d. New records are always added to the top of the file.