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Compute the closure (F+) for the following set of the functional dependencies defined on R(a,b,c,d), where F - {c→a, ab→d, a→b, d→c}, i.e. what are all of the FDs implied by F (Hint; there's 24 of them).
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
A field-groups statement or an insert statement reverses storage space and transfers values. False.
What is data model? Explain object based and record based data models? Ans: A data model is an abstract model in which describes how data is represented and accessed. (i)
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
is Chipo carrying his baby
Differance between procedural and non procedural DML? Procedural and non procedural DML Procedural DML exactly what data is require and how to obtain those data. Non procedural
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
Question 1 Discuss about second normal form and third normal form Question 2 Write short note on 1) Data Manipulation Language 2) Data Definition La
What is Relational calculus? Relational calculus is a Non- Procedural language.
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