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2. Database - Wikipedia

   en.wikipedia.org/wiki/Database

   An SQL select statement and its result. In computing, a database is an organized collection of data or a type of data store based on the use of a database management system ( DBMS ), the software that interacts with end users, applications, and the database itself to capture and analyze the data. The DBMS additionally encompasses the core ...

3. Relational database - Wikipedia

   en.wikipedia.org/wiki/Relational_database

   A relational database ( RDB [1]) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. [2] 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 ...

4. Database model - Wikipedia

   en.wikipedia.org/wiki/Database_model

   The basic data structure of the relational model is the table, where information about a particular entity (say, an employee) is represented in rows (also called tuples) and columns. Thus, the "relation" in "relational database" refers to the various tables in the database; a relation is a set of tuples. The columns enumerate the various ...

5. Relational model - Wikipedia

   en.wikipedia.org/wiki/Relational_model

   Relational model. The relational model ( RM) is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by English computer scientist Edgar F. Codd, [1] [2] where all data is represented in terms of tuples, grouped into relations. A database organized in terms of the ...

6. Column-oriented DBMS - Wikipedia

   en.wikipedia.org/wiki/Column-oriented_DBMS

   Column-oriented DBMS. A column-oriented DBMS or columnar DBMS is a database management system (DBMS) that stores data tables by column rather than by row. Benefits include more efficient access to data when only querying a subset of columns (by eliminating the need to read columns that are not relevant), and more options for data compression.

7. Object–relational database - Wikipedia

   en.wikipedia.org/wiki/Object–relational_database

   Object–relational database. An object–relational database ( ORD ), or object–relational database management system ( ORDBMS ), is a database management system (DBMS) similar to a relational database, but with an object-oriented database model: objects, classes and inheritance are directly supported in database schemas and in the query ...

8. Microsoft PowerPoint - Wikipedia

   en.wikipedia.org/wiki/Microsoft_PowerPoint

   Archived from the original on October 8, 2015. Retrieved August 25, 2017. Microsoft PowerPoint, virtual presentation software developed by Robert Gaskins and Dennis Austin for the American computer software company Forethought, Inc. The program, initially named Presenter, was released for the Apple Macintosh in 1987.

9. Database normalization - Wikipedia

   en.wikipedia.org/wiki/Database_normalization

   Database normalization. Database normalization is the process of structuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancy and improve data integrity. It was first proposed by British computer scientist Edgar F. Codd as part of his relational model .