Which of the following describes properties used to describe an entity?

Which term is the informal name for a Tuple in the Relational Model?

In the E-R Diagram notation, an attribute that can be calculated from other stored attributes (like Age from Date of Birth) is represented as a:

Which constraint specifies that every entity in the entity set must participate in the relationship at least once?

The constraint that links two relations via a Foreign Key is:

Which integrity constraint in the Relational Model prohibits the Primary Key from having a NULL value?

The Key Attribute in an E-R Diagram should be underlined. (True/False)

In the E-R Model, the Primary Key of a Weak Entity is formed by combining its Partial Key with the:

Which phase involves specifying the data types, structures, and constraints to be stored in the database?

Which type of attribute is composed of several meaningful sub-parts (e.g., Address broken down into Street, City, and Zip)?

The ability to change the conceptual schema without requiring changes to the external views or application programs is called:

Sharing of data and multi-user transaction processing is NOT allowing a set of concurrent users to retrieve from and update the database. (True/False)

Which DBMS role is typically responsible for managing backup, recovery, and access authorization?

The term Relation in the Relational Model corresponds to the informal term:

The entire collection of data definitions and denoscriptions stored by the DBMS is referred to as the:

Which entity type is defined as one that does not have a key attribute of its own?

العلم الذي يبحث في تصميم أساليب جمع البيانات وتنظيمها وعرضها وتحليلها بغرض اتخاذ القرارات المناسبة هو: