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What is meant by Physical blocks?
The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
Define the five basic operators of relational algebra? Five basic operators of relational algebra are: 1. Union (∪∪∪∪) - Selects tuples which are in either P or Q or in both
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)
A set of possible data values is called? A set of possible data values is called as domain.
What is a view? A view is a logical view on one or more tables. A view on one or more tables i.e., the data from a view is not actually physically kept instead being derived f
What are the object-oriented approaches Software systems which are designed with structured design methodology never support some of desired quality attributes for example reus
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
What is the purpose of storage manager? The storage manager is responsible for the following a) Interaction with the file manager b) Translation of DML commands in to low
Illustrate about the advanced object design Advanced object design is a complex task. The objects discovered through analysis serve as a skeleton of design. The operations reco
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
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