A logical schema
Practice ER Diagram Questions –
A logical schema
ER Diagram Questions
Before any changes to database structure are attempted one should firs
Practice ER Diagram Questions – Before any changes to database structure are attempted one should first:
Referential integrity controls relationships between :
Practice ER Diagram Questions – Referential integrity controls relationships between :
How many copies of the database schema are typically used in the redes
Practice ER Diagram Questions – How many copies of the database schema are typically used in the redesign process?
In which of the following , a separate schema is created consisting
Practice ER Diagram Questions –
In which of the following , a separate schema is created consisting of that attribute and the primary key of the entity set.
Which of the following has each related entity set has its own sche
Practice ER Diagram Questions –
Which of the following has each related entity set has its own schema and there is an additional schema for the relationship set ?
If a multivalued dependency holds and is not implied by the corresp
Practice ER Diagram Questions –
If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.
The ability to modify the conceptual schema without causing any change
Practice ER Diagram Questions – The ability to modify the conceptual schema without causing any change to the application program is known as :
