Examples of using Referential integrity in English and their translations into Hungarian
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Computer
Referential integrity and foreign keys.
Might not have referential integrity.
Referential integrity should be maintained.
Also, Access automatically enforces a set of rules called referential integrity.
To add referential integrity rules.
In a database of many relations, there are usually many referential integrity constraints.
Referential integrity, which is dependent on table relationships, helps ensure that references stay synchronized.
The"one" and"many" symbols are not displayed in this case, because referential integrity is not enforced.
Deleting this will break the referential integrity of the software installation data in the Active Directory.
Important: If the table that you archive is related to other tables, you might need to work around referential integrity.
Figure 3.7 shows the schema in Figure 3.5 with the referential integrity constraints displayed in this manner.
If you enforce referential integrity for this relationship, the line appears thicker at each end.
Important: If the table that you archive is related to other tables,you might need to work around referential integrity.
Steps in this section explain Referential Integrity, and how to perform both tasks.
You enable this behavior by turning on referential integrity and cascading updates between the two tables.
You enable this behavior by turning on referential integrity and cascading updates between the two tables.
If the"child" records can always be safely deleted,make sure that the relationship enforces referential integrity, with cascading deletes.
To define referential integrity more formally, first we define the concept of a foreign key.
Excel lets you enter data in a more free-form manner, but because Excel does not support relational data,it cannot support referential integrity.
Including referential integrity use of stored procedures triggers and other advanced database design and coding techniques.
If you want to delete data from several related tables,you must enable the Referential Integrity and Cascade Delete Related Records options for each relationship.
May have to work around referential integrity, especially if the records that you want to archive are on the one-side of a one-to-many relationship.
You enable this behavior by turning on referential integrity and cascading updates between the two tables.
Power Pivot does not require that referential integrity be enforced between two tables in order to define a valid relationship.
Because Power Pivot does not enforce referential integrity, it is possible to have non-matching values in a key column and still create a relationship.
If the old relationship enforced referential integrity, select Enforce Referential Integrity, and then click Create.
For relationships that enforce referential integrity between tables, the deletion of all related records in the related table or tables when a record in the primary table is deleted.
You can decide how to upsize table relationships and referential integrity by using update, insert, or delete triggers, or by using Declared Referential Integrity(DRI).