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What is meant by computing the closure of a set of functional dependency?
The closure of F denoted by F+ is the set of functional dependencies logically implied by F.
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof
Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Every simple attribute of an entity type have a possible set of values that can be attached to it. This is known as the domain of an attribute. An attribute cannot have a value out
What is an entity relationship model? The entity relationship model is a collection of basic objects known as entities and relationship between those objects. An
what is query processing ,query optimization and performance turring?
One-to-many : An entity in A is related with any number of entities in B. An entity in B is related with at the most one entity in A. Example: Relationship between faculty and d
i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
how to design tables
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