primary key

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A uniquely identifying key in the design of database tables
The MSLINK column in a database with linkages Any row can be uniquely specified solely by its MSLINK column value
key according to which primary searches and primary sorts are performed
The columns in a table that uniquely identify the rows in the table
Used in ER diagrams; if you think of the contents of an entity as a series of rows in a table, the primary key is the field containing the unique identifier for each row For example, in the entity Invoice there is a row of data for each invoice, and the field Invoice Number could serve as the primary key, which uniquely identifies a given invoice
A column or columns that uniquely identifies a row in a table
The Key chosen by the database designer to be VA FileMan's principal means of identifying records in the file VA FileMan automatically displays the Primary Key during classic interactive lookup (^DIC) and uses the Primary Key to identify records brought in during a KIDS installation Exactly one Key in a file or subfile must be designated the Primary Key See Key
A field used to uniquely identify a record
In a database, a field which uniquely identifies each record See: Key (Webopaedia)
The column or columns of a table whose individual or combined values (in the case of a composite primary key) uniquely identify a row in a table
A key whose value uniquely identifies a row
A column, or combination of columns, within a table whose values together form the "principal unique identifier" of rows in that table In other words, a table's primary key serves to uniquely identify row in that table
One or more columns whose values uniquely identify every row in a table Normally an index always exists on the primary key
- The key field in the Address Book that is used by FootPrints as a reference to identify the customer contact
The information in a database column or columns that constitutes a unique entry for each row in the database table
An attribute in an entity that uniquely identifies rows of that entity For example, the Employee entity can contain an empID attribute that uniquely identifies each employee
An attribute selected to act as the unique identifier for each occurrence of an entity or relationship A primary key must be unique, stable, minimal and non-null under all conditions
An object that uniquely identifies an entity bean within a home
An attribute or group of attributes that uniquely identifies a tuple within a table Example: A customer table might have as its primary key the customer number
A column in a table whose value uniquely identifies its row in the table It cannot be a NULL value
A field, or fields, used to uniquely identify a field
Specific characters which identify a class value within the database record
An element's unique identifier
Every table should have one field (attribute) which is unique to each record, or at least some combination of fields which taken together are unique to each record There is no other way to distinguish a single record reliably This field or combination is called the primary key
a key such that the value of the key attribute(s) will uniquely identify any tuple in the relation A relation must not have more than one primary key
A column or number of columns that uniquely identifies a row in a table; i e a primary key value cannot occur more than once in a table Therefore a primary key must be unique and not contain null values A Cadidate Key is a good choice for the primary key of a table
An attribute (or combination of attributes) that uniquely identifies each row in a relation (6) See also Composite key, Foreign key, Identifier, Index, Secondary key
pk

İlgili Terimler

primary keys
plural form of primary key
A primary key
identifier
primary key

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    pri·ma·ry key

    Türkçe nasıl söylenir

    praymeri ki

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    /ˈprīˌmerē ˈkē/ /ˈpraɪˌmɛriː ˈkiː/