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.
A value or column(s) in a table that refers to a primary key in another table.
the primary key when repeated in a related table, an attribute in one table whose values must either match the primary key in another table or be null
The primary key of one file or table which is implanted in another file or table to implement the relationships between them. Foreign keys are used to implement some types of relationships. Foreign keys do not exist in information models.
A foreign key is the primary key of one data structure that is placed into a related data structure to represent a relationship among those structures. Foreign keys resolve relationships, and support navigation among data structures.
Column or combination of columns whose values are required to match a primary key in some other table; or is a Primary Key of a parent entity that contributes to a child entity across a relationship. The parent Primary Key migrates through the relationship to become an attribute of the child entity.
References a PRIMARY KEY in another table
A field in a database table whose values are drawn from the values of a primary key in another table. In a star join schema the components of a composite fact table key are foreign keys with respect to each of the dimension tables providing the keys.
Data that logically connects two or more tables. A foreign key in one table matches the primary key of another table.
A field (or fields) on the many side of a one-to-many relationship between tables that relates to the primary key of the other table. Foreign keys do not need to be unique within the table.
An attribute in an entity that gives it access to rows in another entity. This attribute must be the primary key of the related entity. For example, an Employee entity can contain the foreign key deptID, which matches the primary key in the entity Department. You can then use deptID as the source attribute in Employee and as the destination attribute in Department to form a relationship between the entities. See also "primary key"; "relationship".
One or more columns in a relational database table that implement a many-to-one relationship that the table in question has with another table or with itself.
A key used in one table to represent the value of a primary key in a related table, this is used to link tables in a relational database. While primary keys must contain unique values, foreign keys may have duplicates.
A field in a relational table that matches the primary key column of another table.
A reference to the primary key in another table.
One or more table attributes that can uniquely identify a record in another table. A foreign key is the primary key of another table. Foreign key-primary key relationships define a relational join. See also relate.
column in a table that does not uniquely identify rows in that table, but is used as a link to matching columns in other tables.
In the context of a relational database, a foreign key (FK) is a field or group of fields in a database record that points to a key field or group of fields forming a key of another database record in some (usually different) table. Usually a foreign key in one table refers to the primary key (PK) of another table. This way references can be made to link information together and it is an essential part of database normalization.