A Database Crossword

Across:
1.	The primary key has to be this.
6.	The basic component of each record
9.	Used to list all the fields in the database
11.	Operators such as AND, OR and NOT
12.	A quick method to create a database
13.	A type of validation check that counts how many characters have been entered
14.	The filed type where data is of numbers only
15.	The ...... key is the field that identifies each record
18.	The type of database that has more than one table with joined fields
20.	A value that is automatically entered into a field
21.	A sort from highest to lowest
22.	The output of a query
24.	Could be used to eliminate errors on a postcode field
26.	Lots of records make a?
27.	A primary key from one table that is not the primary key when used in another table
28.	You can attach this to a button to speed up form operations

Down:
2.	You should enforce referential ......... in a relational database
3.	A database of just one table
4.	A check to see if data is possible
5.	The field type where there are only 2 possible values
7.	A whole number
8.	Lots of these make up a file
10.	The number of characters allowed in a field
16.	A field type that creates numeric data for you
17.	A field type that can be either letters or numbers
19.	A sort from lowest to highest
23.	Every field will need it's own one of these
25.	A way of searching for specific records
26.	You can create this to view records one at a time