unique key
primary key

An example of this is the derived unique key per transaction method.

For people who did not have a unique key the system would generate one for them.

What's more, events occur in the cloud computing are also assigned a unique key.

If it is encrypted, a unique key shall be used for each transaction.

Each term has a unique key, titles and (optional) descriptions.

To verify votes, a record of each vote, along with a unique key provided to the voter, could be published.

And the point is that it's driven by a unique key that nobody knows.

It just creates a new, unique key which will decrypt the text entirely.

So that otherwise identical units can be shipped with unique keys.

However, there could be further unique keys that could serve the same purpose.

The framework calls the application's Reduce function once for each unique key in the sorted order.

Connection to battle.net is permitted only with a valid and unique key.

A table can have at most one primary key, but more than one unique key.

It is a special case of unique keys.

The validation system was based on a list of unique key words that each agent memorized, which were known to nobody else.

Each unique key is composed from one or more data attributes of that data entity.

There are several Doors of Time spread around the village and each door requires its own unique key to open.

In doing so, she forges a unique key that releases the fabled treasure.

A unique key constraint does not imply the constraint in practice.

The original n-CD is a unique key reserved for just their owners.

A table that lacks a unique key.

For its use in data structure, database and cryptographic applications, see hash function or unique key.

Documents are addressed in the database via a unique key that represents that document.

From the set of candidate keys, a single unique key is selected and declared the primary key for that data entity.

Depending on its design, a database table may have many unique key indexes but at most one primary key index.

In this circumstance one of these is chosen as the primary key.

In order for an attribute to be a good primary key it must not repeat.

The primary key can also be specified directly during table creation.

Later in the war, teamwork became the primary key to success and survival.

Loads the object from a single record, where the primary key is ix.

The first asserts the primary key of the piece, that is, the tonic.

This set of attributes is usually called primary key.

A surrogate key can be used as the primary key.

Relations in databases are designed to be searched by the primary keys.

The column is assumed to be the primary key.

Degenerate dimensions often play an integral role in the fact table's primary key.

Use of an immutable natural key as a primary key.

Primary keys can be at most two separate fields.

As brothers they were able to harness a natural synergy which was the primary key to their success.

The definition does not require a Primary Key to be defined.

In many cases an identity column is used as a primary key, however this is not always the case.

In a good database design, a natural key which can change should not be considered as a "real" primary key.

Google claims it is not a pure relational system because each table must have a primary key.

The foreign key in the Invoices table points to that primary key.

An entity bean is identified by a primary key.

Tables are linked using primary key to foreign key relationships.

Tables can relate by using a foreign key that points to the primary key.

The only significance of the surrogate key is to act as the primary key.

The primary key may consist of a single attribute or a multiple attributes in combination.

A primary key is a combination of columns which uniquely specify a row.