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.#question. Discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized database environment.
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
What are the disadvantages of relational approach? Disadvantages of relational approach: • Substantial hardware and system software overhead • May not fit all business models •
what is the relationship between receipt and owner entities in computer sales and service company
You are required to implement integrity constraints within the database to enforce the following requirements: For Projects: Start date must be supplied. Start date cannot be i
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
Define hot swapping? Hot swapping permits the removal of faulty disks and changes it by new ones without turning power off. Hot swapping decreases the mean time to repair.
intent locking
what benefit can a company gain by managing its own infrasture and services
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