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Introduction to Databases

Introduction to Databases. Laurie Shteir and Ezequiel Moctezuma. Is a powerful database management system (DBMS) that functions in the windows environment and allows you to create and process data in a database. Key features are: Data entry and update Queries (questions) Forms Reports

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Introduction to Databases

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  1. Introduction to Databases Laurie Shteir and Ezequiel Moctezuma

  2. Is a powerful database management system (DBMS) that functions in the windows environment and allows you to create and process data in a database Key features are: Data entry and update Queries (questions) Forms Reports Web support MS AccessUses extension .mdb (multi-relational databse)

  3. What is a Database • Collection of all the data related to a particular topic or purpose -- for example, student data, customer data or product data

  4. Structure of a Database File or Table Records Garner Julia 30 Simpson Ave 555-3432 Garrett Allen 1222 Elm Street 555-9876 Gieger Carl 25 West Ave 555-2702 Geiser Gary 712 Chestnut 555-1112 Goucher Gerard 17 Asbury Ave 555-2956 Fields

  5. Definitions Data field is a group of related characters Garner Julia 30 Simpson Ave 555-3432 Data Record is a group of related data fields Garner Julia 30 Simpson Ave 555-3432

  6. Definitions A Database is a collection of one or more related data files or tables Garner Julia 30 Simpson Ave 555-3432 Garrett Allen 1222 Elm Street 555-9876 Gieger Carl 25 West Ave 555-2702 Geiser Gary 712 Chestnut 555-1112 Goucher Gerard 17 Asbury Ave 555-2956

  7. What can I do with Database Software? • Enter data quickly and easily • Organize records in different ways • Locate specific records quickly • Eliminate data • Connect files with related information • Create Reports • Create Queries

  8. Data Management Software • File Managers • Manage data from one file (Flat File) • Data Base Management Systems • Manage data from related files; these files are connected in some way

  9. Database Organization • Hierarchical, Network, Relational and Object-Oriented • Relational -- Collection of related tables that share information. Most common type of database organization • Access is a relational database that can be used as a file manager or a full-blown database management system

  10. Relational DatabaseCollection of related tables that can share information. Most flexible

  11. Other terms to know • Table- • Query- • Field properties- • Filter- • Relational database- • Report- • Datasheet window- • Primary key- • Field- • Filed types- • Sort- • Criteria cell-

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