Introduction to database


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Introduction to database

  1. 1. Introduction to Database Software
  2. 2. MEANING OF DATABASE A database is the computer equivalent of an organized list of information. Typically, this information has a common subject or purpose, such as the list of employees, phonebook guide or a classmate address book. Microsoft Access 2003 (Access 2003) is a database system management (database programs). It can store, manage, manipulate, analyze, retrieve, display or publish information from database.
  3. 3. Access windowtitle bar Database toolbarDatabase Databasewindow menu window toolbarbar barDatabase Databasewindow title windowbar Objects bar Groups bar
  4. 4. 4 IMPORTANT OBJECT BARObjects Bar Function A collection of records that identify a category of data, such as Customers, Orders, or Inventory. Data inside a table is arrange by column name field and row named Record. Table Field – A single characteristic or attribute of a person, place, object, event, or idea. Record – A set of related field values. Use to enter new information, to edit or remove existing information or to Form locate information. Used to locate information, to view, change or analyze it in various ways. A select query retrieves data from one or more tables and displays the result in Query datasheet. A select query can be used to group record and calculate sums, counts, averages and other types of totals. Typically used to summarize, organize and analyze information in order to Report express a particular point of view to specific audience.
  5. 5. Table
  6. 6. Form
  7. 7. Query
  8. 8. Report
  9. 9. Examples of Database Software Microsoft Access 2003/2007 PHP MySQL OracleExamples of Database Application EMIS – Sistem Maklumat Guru SMM – Sistem Maklumat Murid SAP – Sistem Analisa Peperiksaan
  10. 10. 10 TYPES OF DATATypes Data Function You may type in any alphabetical/numerical data that you desire-up to a Text maximum of 255 characters. As indicated, this is a text field, so you cant do mathematical calculations. Examples of Text data are: names, addresses, stock numbers, room numbers, zip codes, etc Memo This field is for lots of text. You can have up to 32,000 characters. This field is for numbers where you want to add, subtract, multiply, divide, average, and do numerical calculations. Number This field can be a very large size, so when we get to Field Properties, well talk about "sizing" this field so it doesnt take up too much "space" in storage.Date/Time Dates and Times. You may format this later, as you may desire. Dollar ($). You may format this later, as you may desire. For example RinggitCurrency Malaysia (RM)
  11. 11. 10 TYPES OF DATA Types Data Function This field is an "automatic" counter that assigns a number AutoNumber each time you put data into a new field. Yes/No This is a "True/False" or "Yes/No, 0/1” type of field. This means "Object Link Embedding" which indicates you can insert a graphic, picture, sound, etc. Pretty neat to put a photograph in a OLE Object personnel record or a picture of an inventory item in the stock record (advanced stuff). A hyperlink is a pointer from one object to another. The destination is frequently another Web page, but it can also be a picture, an e-mail address, Hyperlink a file (such as a multimedia file or Microsoft Office document), or a program. The hyperlink itself can be displayed as text or as a picture. This wizard creates a lookup column, which displays a list of values you canLookup Wizard choose from.
  12. 12. PRIMARY KEY PRIMARY KEY means the value in the primary key fields is need to uniquely identify each record; that’s no record can have the same value in this field. Icon Primary Key