Databases

1. A group of related data
3. A collection of tables with related data
4. Combining columns from different tables into one temporary results table
8. A key that consists of multiple columns
9. A relationship where one record from one related table will match only one record from another related table
10. A type of database element that you can search on, just like you would find at the back of a book
12. Consists of one or more columns that must be unique within a table

1. Storing data twice
2. A relationship where multiple records from one related table can match multiple records from another related table
5. A relationship where one record from one related table can match multiple records from another related table
6. A row from a table that links back to a primary key in another table
7. A data element that contains data of one and the same kind
11. A matrix with data