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What is vertical fragmentation?
Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
Scenario: You are a freelance database designer who has just been contacted by a small software development company named Altair Software. The president of the company has asked
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
Give an example of enforcement in Typing. You can understand the idea of enforcement as it makes sure objects of dissimilar classes may not be interchanged as below: Exampl
What is foreign key? A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a
Illustrate the State model for the ATM class let us take state model for the ATM class given below in Figure showing state model of the ATM class and the pseudo code derived fr
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
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Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): Ans: The relational database schema f
What is an object ID? Each class-derived table has an ID for primary key, one or more object IDs form primary key for association derived tables. An object ID is equivalent dat
give me a diagram about physical or internal level
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