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What is key ?
Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is called as key.
What is difference between TRUNCATE and DELETE? - Truncate can't be rolled back whereas Delete can be. - Truncate keeps the lock on table whereas Delete keeps the lock on ea
A software contract and consultancy firm maintains details of all the various projects in which its employees are currently involved. These details comprise: Employee Numbe
what do you understand by enhanced entity-relationship
Critically evaluate the bulleted list of information-related items in this case study. How are each contradictory to the notion of being an information-literate knowledge worker?
State the Object Design for Processing The object design phase comes after analysis and system design phase. The object design phase includes implementation details like as i
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
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
What is the full form of DDL? DDL is stand for Data Definition Language.
Explain weak and strong entity sets? Weak and Strong entity sets: A physically powerful entity set has a primary key. All tuples in the group are distinguishable through that k
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
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