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Business computing

Business computing. Session 9 Databases. Office suite softwares (1). Word processor : Word , it is a presentation software, and a letter and document preparation software. The main orientation is DISPLAY

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Business computing

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  1. Business computing Session 9 Databases

  2. Office suite softwares (1) • Word processor : Word, it is a presentation software, and a letter and document preparation software. The main orientation is DISPLAY • Presentation software : PowerPoint, it is also a presentation software, to make slides to support a speech

  3. Office suite softwares (2) • Spreadsheet : Excel, it is a software to make calculations on data, particularly on data coming in the form of tables • It is perfectly suited for financial project data (usually columns correspond to years) • It is also a presentation software, and it has graphic capabilities

  4. Office suite softwares (3) • Database : Access • A database is a software to store, treat and display ORGANIZED information • What is organized information ? It is information with a repetitive pattern (also called structure)

  5. An example • A football player card collection. • What data shall we enter for each player ? Zidane, Reccoba, Raul • Lastname : Zidane, Reccoba, Raul • Firstname : Zinedine, Alvaro, Gonzalez • Team : Real Madrid, Inter Milan, Real Madrid • Birthdate : 1972, 1974, 1976 • Position in the field : middle attack, middle attack, attack • Nationality : French, Uruguay, Spaniard

  6. Example of data with a repetitive structure : a football player card collection • In a football player card collection we enter on each card : • The lastname (for instance : Zidane, or Ronaldo) • The firstname (for instance : Zinedine) • The club (Real Madrid, Real Madrid) • The birthdate (1972, in Marseille, 1976) • The picture • Position in the field

  7. Shoeboxes and Databases • A database is the electronic version of a shoebox with cardboard cards • On each card there is information, with the same structure, on an item, or a person • The structured information on each card is contained in FIELDS • In each field there is elementary information • The information contained in the field « birthdate » for the record of Raul is : 1976

  8. Terminology • The equivalent of a card is called a RECORD • The containers for elementary information on a record are called FIELDS • For example, the content of the field « club » on the record for Michael Owen is Liverpool FC • The collection of records is called a TABLE

  9. A football player database • We first of all construct the structure of the table • Then we enter data in the table • Finally we display data using a form • (Note we can also enter new data, and correct data in the form mode)

  10. The need for other tables • In our football player db we will have say 1000 players, and say 50 clubs • If for each club we have some information : coach, stadium, turnover, it will be a source of mistake to type again all this information for 20 or 30 players • That’s where we create secondary tables : we will create a table for the clubs

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