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2. Superkey - Wikipedia

   en.wikipedia.org/wiki/Superkey

   A candidate key (or minimal superkey) is a superkey that can't be reduced to a simpler superkey by removing an attribute. [ 3 ] For example, in an employee schema with attributes employeeID , name , job , and departmentID , if employeeID values are unique then employeeID combined with any or all of the other attributes can uniquely identify ...

3. Database tuning - Wikipedia

   en.wikipedia.org/wiki/Database_tuning

   Database tuning describes a group of activities used to optimize and homogenize the performance of a database. It usually overlaps with query tuning, but refers to design of the database files, selection of the database management system (DBMS) application, and configuration of the database's environment ( operating system , CPU , etc.).

4. Candidate key - Wikipedia

   en.wikipedia.org/wiki/Candidate_key

   A candidate key, or simply a key, of a relational database is any set of columns that have a unique combination of values in each row, with the additional constraint that removing any column could produce duplicate combinations of values. A candidate key is a minimal superkey, [1] i.e., a superkey that does not contain a smaller one. Therefore ...

5. DBM (computing) - Wikipedia

   en.wikipedia.org/wiki/DBM_(computing)

   The name is a three-letter acronym for DataBase Manager, and can also refer to the family of database engines with APIs and features derived from the original dbm. The dbm library stores arbitrary data by use of a single key (a primary key) in fixed-size buckets and uses hashing techniques to enable fast retrieval of the data by key.

6. Super key (keyboard button) - Wikipedia

   en.wikipedia.org/wiki/Super_key_(keyboard_button)

   A Super key, located between the Control key and the Alt key, on an ISO style PC keyboard. Super key ( ) is an alternative name for what is commonly labelled as the Windows key [1] or Command key [2] on modern keyboards, typically bound and handled as such by Linux and BSD operating systems and software today.

7. Super key - Wikipedia

   en.wikipedia.org/wiki/Super_key

   Download as PDF; Printable version; In other projects ... Super key may refer to : Super key (keyboard button) ... modifier key on keyboards; Superkey, database ...

8. Comparison of database administration tools - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_database...

   Some - can only reverse engineer the entire database at once and drops any user modifications to the diagram (can't "refresh" the diagram to match the database) Forward engineering - the ability to update the database schema with changes made to its entities and relationships via the ER diagram visual designer Yes - can update user-selected ...

9. Domain-key normal form - Wikipedia

   en.wikipedia.org/wiki/Domain-key_normal_form

   Domain-key normal form (DK/NF or DKNF) is a normal form used in database normalization which requires that the database contains no constraints other than domain constraints and key constraints. A domain constraint specifies the permissible values for a given attribute, while a key constraint specifies the attributes that uniquely identify a ...