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Q: Another name for the primary key is the key?
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What is another name for a primary key?

Also called a Key field.


What is difference between primary key and foreign key?

A primary key is an attribute (or combination of attributes) that uniquely identifies each row in a relation. A primary key is designated by underlining the attribute name. The primary key of an entity set allows us to distinguish among the various entities of the set. A foreign key is an attribute in a relation of database that serves as the primary key of another relation in the same database.


What is a primary key of one file that appears in another file?

A primary key is one that uniquely identifies a record . Also there are cases when primary key of one file appears in another file. In that case the key is called Foreign key.


Another term for major key?

Primary Sort Key


What does the term foreign key mean in databases?

The foreign key is used as a reference in a table to the primary key of another table. For example: consider a table employee with id(primary key), name, address,department_id(foreign key) as its fields.Another table department with fields department_id(primary key) and dept_name. So, department_id is primary key in department table and foreign key in employee table.


Is the last name a primary key?

A primary key is always unique and not null. It is prefer to choose a field that is unique like roll number . But to choose Last name as a primary key is not a good option as two people can have same last name.A Last name field is not a good one for a primary key. A primary key cannot have duplicate values. A last name field is highly likely to have duplicate values, so it should not be used as a primary key.


When foreign key is used?

A foreign key is when a value of one table, which is a primary key of another table. Manufacturer_table - id - name Models_table - id - manufacturer_id - name Models_table.manufacturer_id should be defined is a foreign key to the Manufacturer_table.id column


What is another term for major key in access 2007?

Primary Sort key


Can the FirstName column be a primary key?

Yes, the FirstName column can be a primary key as long as it satisfies the requirements of a primary key, which include being unique and not null. However, it is generally not recommended to use a person's first name as a primary key as it may not be unique and could lead to data integrity issues.


What ensures the value of the foreign key matches another tables primary key?

It is the DBMS that ensures the value of the foreign key matches another table's primary key when referential integrity constraints are enabled within the DBMS


What is another term for unique identifier?

primary key


What Is the primary key of another table that is included for purposes of establishing relationships?

Foreign Key