What are the principles for setting the access primary …

There are several key principles for setting up the primary key in Access:

1. Uniqueness: The primary key must be unique, each record must have a unique identifier. This ensures that each record can be uniquely identified and accessed.
2. Conciseness: Primary keys should be as concise as possible in order to save storage space and improve query performance. In most cases, a primary key can be composed of one or more fields.
3. Immutability: The value of the primary key should be immutable, meaning it should not be modified. This ensures the uniqueness and data integrity of the primary key.
4. Durability: The primary key should be persistent, meaning that the value of the primary key field remains even after the record is deleted. This ensures that the foreign key relationships referencing this primary key in other tables will not be disrupted.
5. Adaptability: The primary key should be able to adjust to changes in the data, meaning the values in the primary key field should remain unique during data updates and insertions. This can be achieved by using methods such as auto-incrementing numbers or UUIDs.