Computer-relational databases

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Cards (7)

    1. Data is a set of meaningless raw facts.
    It's singular is "datum"
    2. Information is a set of datas combined together and forms a meaning.
  • Database is a collection of interrelated data stored together to serve multiple applications.
  • DBMS: It may be defined as a database that stores, maintains and utilises data.
    A database involving DBMS is called a database system.
    DBMS: Data Base Management System
    RDBMS: Relational Data Base Management System.
  • Data redundancy:duplication of data
  • Data Inconsistency: Mismatched multiple copies of same data.
  • Reducing data redundancy is an advantage of DBMS
    • Table in a DBMS is called relation.
    • Rows in a DBMS is called tuples/truples/records.
    • Columns in a DBMS is called attributes/ fields.