Database Management System 6 Sep,2023 boomtecho2@gmail.comLeave a comment 1. The Distinguishable parts a record are called _ Files Data Fields Database 2. File is the collection of all related_ Database records Fields File 3. One of the following is a valid record- based data model _ Object-oriented model Relational model Entity-relationship model None of the above 4. If every non- key attribute is functionally dependent on the primary key, than the relation will be in – 1 NF 2 NF 3 NF 4 NF 5. A primary which ensures that each function dependency is represented in some individual relational relational resulting after decomposition. Loss less join Dependency preservation Both A and B None of the above 6. Which of the following is not valid unary operation in the relational algebra ? select min project rename 7. In the Architecture of a database system external level is the : Physical level Logical Level Conceptual level view level Loading … Question 1 of 7
