The information entered and how the information is entered is a very dominate role in field/record level validation. However they share the same goal to enforce rules consistently, to write less code.
You can add a validation rule to a field in your table's Design View. Select your field in Design View and look for the Validation Rule field at the bottom of the screen. This is where you can enter a validation rule for your field.
types of validations are: required field validation range validation pattern matching validation database specific validation numeric validation
in system level stage field level validation down.
Field validation ensures that a program or form is using clean incorrect data. A set of validation rules are used to check data that is entered into a system before it is processed.
The Validation Text in MS Access is the text that is shown when the conditions set by a Validation Rule are not met. In Access you can specify a Validation Text for each field in a table's Design View in the Field Properties panel.
These are database terms. A field is a column in a table. (holds data). For instance, a table could be about "dress sales". Field: dress_number Field: dress_size Field: date Field: how_many_sold Record is: a row of data added to this table. Defining database fields A field is the basic unit of data entry in a record. To define a new field, you give it a name. Then you select options that determine how the fields interprets, enters, calculates, stores, and displays data. After defining a field, you can set validation, auto entry, and storage options. See Setting options for fields for more information on setting these options. Traditional databases are organized by fields, records, and files. A field is a single piece of information; a record is one complete set of fields; and a file is a collection of records. For example, a telephone book is analogous to a file. It contains a list of records, each of which consists of three fields: name, address, and telephone number.
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Validation rules limit what can go into a field. You might want to only allow values that are over 500 in a field, so the validation would be: >500 You might want dates that are before the 1st of January 2010, so that would be like this: <#01/01/2010#
Validation.