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Keywords:
Referential,
Column,
Primary,
Table,
Key
A foreign key is the primary key from a different table.
A column or columns in a table that match the primary key in another table.
Integrity constraint that requires each value in a column or set of columns to match a value in a related table's UNIQUE or PRIMARY KEY. FOREIGN KEY integrity constraints also define referential integrity actions that dictate what Oracle should do with dependent data if the data it references is altered. See Also: integrity constraint, primary key
One or more columns whose values are based on the primary key or unique key values from another table.
is an attribute (or combination) in one relation whose values are required to match those of the primary key in some other relation.
One or more table fields that refer to the primary key field or fields in another table. A foreign key indicates how the tables are related 3/4 the data in the foreign key and primary key fields must match. For example, a list of valid part numbers would contain a foreign key to an inventory table containing references to valid part numbers. Used when establishing referential integrity for a database. . form A window or dialog box. Forms are containers for controls. A multiple-document interface (MDI) form can also act as a container for child forms and some controls. .
A column in a database table which is defined as a primary key in another table within the same database.
One or more columns in a table that implement a many to one relationship that the table in question has with another table. This concept allows the two tables to be joined together. Oracle, 1998. ()
this is a special non-unique key used to enforce automatically referential integrity. In IB, when you declare a FK, the underlying index is created automatically and it always is in ascending order. Its reference field in the master table must be a PK or UK.
A database key that is used as a reference to relate one entity to another entity. It may be a unique value, or used in conjunction with another Foreign Key to create a unique value.
a collection of columns (attributes) that together have some operational meaning (they enforce a relationship to a Primary Key in another table)
a column in a table used to reference a primary key in another table
a column in one table that can be used to uniquely identify the row from another table
a column of combination of columns used to retrieve a related row from a related table
a column on a table whose data is coming from another table
a column or columns whose values are the same as the primary key of another table
a column (or combination of columns) whose values match the primary key in some other table
a column or combination of columns with values based on the primary key of another table
a column or group of columns within a table that references a key in some other table (or sometimes, though rarely, the same table)
a column or group of columns within a table that refers to, or relates to, some other table through its values
a column or set of columns whose values are required to match at least one primary key value in another table
a column(s) whose values are a resultant from the primary key table
a column that contains only values from a key in another table, or NULLs
a column where each value contains a value in the primary key of another defined table
a combination of columns that reference a unique key, usually the primary key, in another table
a data attribute(s) that appears in one table that may be part of or is coincidental with the key of another table
a field from a database table that refers to (or targets) a specific key, usually the primary key, in another table
a field in a table for which every entry has a unique value in another table and where the field in the other table is the primary key for that table
a field in a table which is also the Primary Key in another table
a field in one table that is linked to the primary key of another table through a relationship
a field or a group of fields in one table whose values match those of the primary key of another table
a field or group of fields in a database record (row) that matches a primary key field (or fields) in a related table, enabling cross-referencing of information
a field or set of fields that holds the primary key value for another table
a field that provides a link to a primary key in another relation
a field that references the primary key field of another table
a key in a table that is the same as the primary key in another table
a key in one table that refers to a primary key in another table
a key that is part of the definition of a referential constraint
a link from a child table back to a parent table
a named collection of columns within a table that is actually the primary key (collection of columns) from another table
an attribute loaned to another field in order to create a connection between them Making databases more efficient is called normalisation (or optimisation if you're Oracle )
an attribute or composite attribute that completes the relationship between two entities
an attribute (or group of attributes) that is the primary key to another relation
an attribute (or set of attributes) that appears (usually) as a nonkey attribute in one relation and as a primary key attribute in another relation
an attribute or set of attributes that identifies the child side of a relationship
an attribute that completes a relationship by identifying the parent entity
an index that uses data from another table
a non-key field (usually) in a table whose value is the same as the key field(s) of a different table
a non-unique key whose values are contained within a primary key in another table
a Primary Key of a parent entity that is contributed to a child entity across a relationship
a primary key of one table that is embedded in another table
a primary key that's stored in a different table
a reference to a primary key in a linked table, e
a set of columns that represent a primary key in a different table
a set (one or more) columns in a table which references the primary key of another table and clearly they must be of the same data type, e
a value in one table that references, or points to, a related row in another table
a value that points to a particular row (the primary key) of another table
One or more columns that match the primary key in another table.
Field in on table whose values are required to match the primary key of another table.
An attribute requiring that a value must exist in another object, if not NULL, and be its primary key.
In a relational database management system terms, the item or column of a data that is used to relate one file to another.
Key that links a row or column of data in a table to a table in another business area. See: primary key.
field or combination of fields in a database table with a value matching the primary key in another table. See relationship.
An attribute or set of attributes in an entity that appear in that entity due to key migration from another entity via a relationship. Notation is FK.
(RM,TM) A set of attributes that is copied from the PK of a parent table into the scheme of a child table. association.php
A column in one table that is a primary key in a second table.It does not need to be a key in the first table.For example,in an Order table,CustomerID is a foreign key because it is a primary key in the Customer table.
In a table, a column whose data values correspond to the values of a key column in another table.
A column, or combination of columns, whose values must match those of a primary key in the same or different table. A given foreign key value represents a reference from the row(s) containing it to the row containing the matching primary key value. The problem of ensuring that every foreign key value does in fact match a value of the corresponding primary key is known as the referential integrity problem.
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