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.
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.
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.
Tables, Entities, Attributes, Primary Keys, and Foreign Keys
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.
An in-memory database. The database contains tables and constraints, and data.
Zip code is the US term for Post Code
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With reference to Databases, what are Primary keys?
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.
Record holds data about one object with its attributes specified in table.
"Field" equates to a column of a database table, the two terms are interchangeable.
A relational database is a type of database, so in one sense there is no difference. There are various kinds of database. A relational database is one type. Others include network and hierarchical.