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What is meant by data-transfer rate?
The data-transfer rate is the rate at which data can be retrieved from or kept to the disk.
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
Benefits and Limitations od Data Models?
entity relationship diagram for online examination system
Define Two phase commit Two phase commit: To make sure atomicity, all the sites where a transaction is being executed must agree on the final outcome of the execution. The tran
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
Construct a generalization-specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles that comprise an engine number and cost; cars that have a chass
State the process of Rearranging Classes and Operations The various, yet similar operation of different classes can be slightly modified thus that they can be covered by a sin
Consider entity type Employee with attributes empNumber (this is unique), empName, and the year when he/she was hired. An employee can either be a technical employee, a marketing e
define attribute inheritance with example?
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
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