When.com Web Search

  1. Ads

    related to: candidate key database management software

Search results

  1. Results From The WOW.Com Content Network
  2. Candidate key - Wikipedia

    en.wikipedia.org/wiki/Candidate_key

    A candidate key, or simply a key, ... Keys: An overview of the different types of keys in the RDBMS (Relational Database Management System). ...

  3. Category:Database management systems - Wikipedia

    en.wikipedia.org/wiki/Category:Database...

    A database management system (DBMS) is a computer program (or more typically, ... Candidate key; CAP theorem; Cdb (software) Column (database) Commit (data management)

  4. Unique key - Wikipedia

    en.wikipedia.org/wiki/Unique_key

    In relational database management systems, a unique key is a candidate key. All the candidate keys of a relation can uniquely identify the records of the relation, but only one of them is used as the primary key of the relation. The remaining candidate keys are called unique keys because they can uniquely identify a record in a relation.

  5. 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 ...

  6. Database normalization - Wikipedia

    en.wikipedia.org/wiki/Database_normalization

    To conform to 2NF and remove duplicates, every non-candidate-key attribute must depend on the whole candidate key, not just part of it. To normalize this table, make {Title} a (simple) candidate key (the primary key) so that every non-candidate-key attribute depends on the whole candidate key, and remove Price into a separate table so that its ...

  7. Relational database - Wikipedia

    en.wikipedia.org/wiki/Relational_database

    A database management system used to maintain relational databases is a relational database management system (RDBMS). Many relational database systems are equipped with the option of using SQL (Structured Query Language) for querying and updating the database.

  1. Ad

    related to: candidate key database management software