Updatable Property

See Also    Example    Applies To

Returns a value that indicates whether you can change a DAO object.

Syntax

BOOLGetUpdatable(VOID);

Remarks

Depending on the object, if the Updatable property setting is True, the associated statement in the following table is true.

Object Updatable indicates
CdbDatabase Object can be changed.
CdbQueryDef Query definition can be changed.
CdbRecordset Records can be updated.
CdbTableDef Table definition can be changed.

The Updatable property setting is always True for a newly created CdbTableDef object and False for a linked CdbTableDef object. A new CdbTableDef object can be appended only to a database for which the current user has write permission.

Many types of objects can contain fields that can't be updated. For example, you can create a dynaset-type CdbRecordset object in which only some fields can be changed. These fields can be fixed or contain data that increments automatically or the dynaset can result from a query that combines updatable and nonupdatable tables.

If the object contains only read-only fields, the value of the Updatable property is False. When one or more fields are updatable, the property's value is True. You can edit only the updatable fields. A trappable error occurs if you try to assign a new value to a read-only field.

The Updatable property of a CdbQueryDef object is set to True if the query definition can be updated, even if the resulting CdbRecordset object isn't updatable.

Because an updatable object can contain read-only fields, check the DataUpdatable property of each field in the Fields collection of a CdbRecordset object before you edit a record.

Snapshot- and forward-only–type CdbRecordset objects always return False.