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There are six keys in database that we use . Each key serves specific functions like primary is used to identify a tuple uniquely. Keys in database are Primary, surrogate, foreign, alternate , candidate, super.
Wiki User
∙ 8y ago
Wiki User
∙ 11y agoa key is a single or combination of multiple fields. it's purpose is to retrieve or access data rows from table according to the requirement
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What are secondary keys?
Secondary keys are the database keys that hold the physical location of a portion of a record in a database or file. They provide a secondary way of accessing the information.
Types of keys?
There are many keys in database each having particular use. Types of keys in database are : Primary key, candidate key, alternate key, foreign key, surrogate key.
What are the basic components of a database?
Tables, Entities, Attributes, Primary Keys, and Foreign Keys
How does a database store data about its tables?
A database is used to store data in its tables by a specified number of rows and columns. Each database also uses specific cells, foreign keys, and unique keys.
What is data set in c sharp?
An in-memory database. The database contains tables and constraints, and data.
What do you mean by zip code in database?
Zip code is the US term for Post Code
How many Auto Keys macros can be created in a database?
4
What does it mean to populate a database?
Populating a database generally means adding information (data) to a database, thus filling in any pregenerated information needed. It could also mean adding the fields to a database in order to be able to fill it with information. The final common use of that term is to connect a database to a front end application in order to use the information stored in that database.
What is the meaning for primary key in database?
With reference to Databases, what are Primary keys?
How functional dependency is related to database table design?
The functional dependency is related to the database table design through the foreign and primary keys. The foreign and primary keys are functionally dependent on each other.
What is the term 'field' mean in databases?
"Field" equates to a column of a database table, the two terms are interchangeable.
What does the term database record mean?
Record holds data about one object with its attributes specified in table.
