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What is the way a particular application views the data from the database that the application uses?
Sub schema is the way a particular application views the data from the database that the application uses.
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 pictori
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Structure of Client Server Systems: In client/server architecture, clients show users who require services while servers give services. Both client and server are a combination of
coventions for displaying an ER schema as ER diagram
Explain the Recoverable Schedule A recoverable schedule is one in which for each pair of transactions Ti and Tj such that Tj reads a data item formerly written by Ti, the comm
Which operation is used if we are interested in only certain columns of a table? PROJECTION operation is used if we are interested in only certain columns of a table.
Given the subsequent relations: vehicle (reg_no, make, colour) Person (eno, name, address) Owner (eno, reg_no) Write expressions
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
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