Across
- 3. Various methods of building a system so that if something fails, other components pick up the load without losing the entire transaction or application.
- 4. Performing two (or more) operations on the same data at the same time. The DBMS must sequence the operations so that some of the changes are not lost.
- 6. A diagram that shows the associations (relationships)between business entities.
- 7. A database system that holds objects, including properties and methods. It supports links between objects,
- 9. Providing a verification system to determine who actually wrote a message. Common systems use a dual-key encryption system.
- 11. Software that defines a database, stores the data, supports a query language, produces reports, and creates data entry screens.
Down
- 1. A data integrity constraint where data can be entered into a foreign key column only if the data value already exists in the base table
- 2. In a database application it is a set of changes that must all be made together.
- 5. The acronym for transactions that specifies the four required elements of a safe transaction: atomicity, consistency, isolation, and durability
- 8. A situation that exists when two (or more) processes each have a lock on a piece of data that the other one needs.
- 10. inheritance