Database Fundamentals Objective 5.01: Understand database tables used in business Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

What is a Database? Database - a tool used to organize, store, retrieve, and communicate (report on) groups of related information. Databases help you manage practically endless types of information: sales and inventory numbers, student records, or a home collection of DVDs, CDs, and videotapes, just to name a few. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Examples of Databases Telephone book Online library card catalog Media Center information Encyclopedias Dictionaries eBay and other online businesses Inventory Keep track of customers, products, vendors, pay pal accounts Business stock inventory Barcode scanner keeps inventory in database Fingerprint database iTunes Personal address book Student data (NCWISE), such as Student ID #’s Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Why do businesses use databases? A database is a tool used by businesses to manage the huge amount of data required to run the business. keep track of employee information, customers, products, and prices of products. information can be easily and efficiently managed and shared by database software. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

What makes a Database? Databases consist of 4 main Objects: Tables - store data in rows and columns Queries - retrieve and process data Forms - control data entry and data views A form is a customized manner of inputting data into a database or presenting data on a screen. Reports - summarize and print data Tables All databases contain one or more tables. Queries Queries can combine data from different tables, update your data, and perform calculations on your data. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Tables Tables store data Tables- used to group the essential building blocks Tables- used to group and organize information within a database. All databases contain at least one table. Each database usually consists of one or more tables.

Tables Databases should have a separate table for every major subject employee records or customer orders. Data should not be duplicated in multiple tables.

Tables 1. Table – arrangement of columns and rows Made up of Rows called Records Columns called Fields Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Table Components: Entry, Field, Record 2. Entry - a single piece of data in a database table. Data is typed into a Field as an entry 3. Field - a grouping or category of similar information represented by a COLUMN, comprised of entries. 4. Record is a complete description of all of the fields related to one item in a table. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Tables A Field is a unique identifier 3. A Field is a grouping or category of similar information contained in a table. A Field is represented by a COLUMN. It is comprised of entries. A Field is a unique identifier for a category of information. It is one item or bit of information in a record. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Tables 4. Record - a combination of fields related to one item in a table. Everything on one row is a record. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Database Tables: The Big Picture Entries Field 4. Record 3. FIELDS (columns) 4. RECORDS (rows) Distribute B5.01-03 “Parts of a Database” Activity and B5.01-04 “Parts of a Database Activity Two” Activity for students to work on. 2. ENTRIES (cells) To calculate the number of entries in a database--multiply the number of fields by the number of records. Ex. 5 fields(columns)*26 rows (records) = 130 entries in this database. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

What is the answer? Name Birth date Social Security No. Street City State Zip Phone Each item on the left is classified as a/an: Table Record Field Entry Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

What is the answer? Susan Almond 10/22/1985 245-88-9845 31 Bessemer St. Greensboro NC 25233 336-585-5646 Each item on the left is classified as a/an: Table Record Field Entry Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

What is the answer? Susan Almond 10/22/1985 245-88-9845 31 Bessemer St. Greensboro NC 25233 336-585-5646 All of the information about Susan Almond is classified as a/an: Table Record Field Entry Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

What is the answer? Information about multiple employees is classified as a/an: Table Record Field Entry Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10

Susan’s Record Name Bday SS Street City St Zip Phone Almond, Susan 10/22/1985 245-88-9845 31 Bessemer St Greensboro NC 25233 336-585-5646 One record is displayed from the Employee Table above. The table contains 8 fields. Obj. 5.01: 1-Database-Fundamentals-Ppt. revised for 09-10