1 / 10

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

rogeliom
Download Presentation

Business computing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  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

More Related