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Define an operator that a Relational Algebra does not have
Ans: Relational Algebra does not have Aggregation operators.
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
Describe the iterative and incremental life cycle For an iterative and incremental life cycle, two criteria are process and time. The main components of showing a project devel
What does conceptual design work? A conceptual design involves modelling independent of the DBMS.
Define the terms entity, attribute, role and relationship between the entities, giving examples for each of them. Ans: Entity: An entity is a "thing" or "object" in th
What is substitutability? Any method of a class-say A can equally well be adjured with any object belonging to any subclasses B of A. This characteristic leads to code reuse, a
Package classes and associations into models Programs are made of separate physical units which could be edited, imported, complied or otherwise manipulated. The careful part
What is Multivalued Attribute? Multivalued Attribute - Multivalued attribute might have more than one value for an entity. For instance, PreviousDegrees of a STUDENT.
explain multi key file organisation
What is an Operand? The data on which the operation is to be performed is known as an Operand
a project based on normalization with first, second and third normalization. There need to be a diagram also
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