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Relational Databases (MS Access)

Relational Databases (MS Access). What is database?. Database: A collection of data and information describing items of interest to an organization.

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Relational Databases (MS Access)

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  1. Relational Databases(MS Access)

  2. What is database? • Database: A collection of data and information describing items of interest to an organization. • Database Management System (DBMS): A program that makes it possible for users to manage the data in a database in order to increase accessibility and productivity.

  3. What is a relational database? • Relational Database: A database in which the data are structured in a table format consisting of rows and columns. • Relation/File: The table in a database that describes an entity. • Tuples: The rows of a relation. Also called records. • Fields: The column of a relation. Also called attributes.

  4. What is a relational database?

  5. What is a relational database?

  6. What is a relational database? • The power of a relational database is twofold: 1) information is managed in separate tables to make maintenance easier, 2) data can be combined by relating different tables.

  7. Microsoft Access • A Microsoft Access database is made up of several components including: • Tables • Forms • Queries • Reports

  8. The Main Access Window • When you open Microsoft Access, many items you see are standard in most Microsoft software programs like Word, Excel, and PowerPoint.

  9. What is a Table? • The columns and rows in an Access table resemble an Excel spreadsheet.

  10. What is a Query? • A query lets you find and retrieve information from one or more tables based on a set of search conditions you define. • Queries can be created using a wizard or developed from scratch in the Query Design view.

  11. What is a Query?

  12. What is a Form? • An online form can be created to view, input or change information in one or more tables. • Forms can retrieve data from one or more tables, and display the output on the screen.

  13. What is a Form?

  14. What is a Report? • A report is an effective way to analyze and present data in a printed format using a specific layout. • You have control over the size and appearance of information printed on the report, similar to formatting you perform in a Microsoft Word document.

  15. What is a Report?

  16. Datasheet basics

  17. Field Properties • Table consists of the fields: Last Name, First Name, Phone, Address, City, State, and Zip. • Each field has unique properties. Some contain characters. Others contain numbers. • These Field Properties are defined when the table is created.

  18. Field Properties

  19. Primary Keys • Every table in Microsoft Access must have at least one field that uniquely identifies each record in the table. This field is known as a primary key. • This primary key essentially opens the door to the table and allows you to retrieve information from the table. • The primary key is the mechanism by which you relate different tables and combine information for viewing (query) or printing (report).

  20. Primary Keys

  21. Creating a New Database • Choose File > New from the menu bar.

  22. Creating a New Database

  23. Creating a New Database

  24. Creating a New Tables

  25. Creating a New Tables

  26. Creating a New Tables

  27. Creating a New Tables

  28. Creating a New Tables

  29. Creating a New Tables

  30. Editing and Deleting Table Records

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