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Describe the candidate key functions ?
Candidate Key and Alternate Key: In some instances, an entity will have more than one attribute which can serve as a primary key. Any key or minimum set of keys which could be a primary key is known as a candidate key. Ones candidate keys are identified, one of them is chosen as primary key. The choice of Primary key is based on guaranteed uniqueness and minimalism. Candidate keys that are not chosen as the primary key are known as alternate keys.
Importance Of File Organisation In Database To execute a database efficiently, there are various design tradeoffs needed. One of the most vital ones is the file Organisation. F
What three major types of actions includes databases? Briefly discuss these The three major types of actions including databases are: (i) Defining: It includes specifyin
Creation of Indexes Automatically: When a primary key or Unique constraint is show in a table definition then a unique index is formed automatically. Manually: User can
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
what is completeness constrent?
There are a number of possible solutions to the open ended brief. One of the simple ones is shown here without the PKs and FKs. It is important to think of how a number of tasks
Copy Data from One Database to another Database Project Description: I am having two MySQL databases with same tables. I just need to copy one Data from one to another dat
Draw an ER diagram for company''s database schema
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
You have a friend that runs a motor bike club that holds racing events at various venues on weekends, on a monthly basis. Some venues are private race tracks and some are dirt trac
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