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Some Facts about Databases Key WordsData TypesCoding.

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Presentation on theme: "Some Facts about Databases Key WordsData TypesCoding."— Presentation transcript:

1 Some Facts about Databases Key WordsData TypesCoding

2 Key Words Field a single piece of information eg Gender, Surname Record the collection of fields stored about one person or thing Primary Key the field that uniquely identifies a record eg Student Number HomeData TypesCodingQuestions

3 Which word best describes this? a) Field b) Record c) Primary key Questions XX Next QuestionKey Words

4 Which word best describes this? a) Field b) Record c) Primary key Questions X X Next QuestionKey Words

5 Which word best describes this? a) Field b) Record c) Primary key Questions X HomeData TypesCodingKey Words

6 Data Types Each field stores data of a particular Data Type eg Number, Text, Date, Currency Some Key Facts: –Text Data Type can store Letters and Numbers = Alphanumeric –Alphabetic means letters only. Access does not have an alphabetic data type. HomeMore Data TypesCodingKey WordsData Types Questions

7 Data Types used in Access Text Letters and Numbers (Alphanumeric) Number Numbers Currency Numbers with 2 decimal places (for money) Date/Time For dates - prevents silly dates eg 63 August HomeData Types QuestionsCodingKey Words

8 Which word best describes this data? a) Alphabetic b) Alphanumeric c) Numeric Questions X X Data TypesNext Question

9 Which word best describes this data? a) Alphabetic b) Alphanumeric c) Numeric Questions X X Data TypesNext Question

10 Which word best describes this data? a) Alphabetic b) Alphanumeric c) Numeric Questions X X Data TypesCoding

11 All about Coding Coding means using a shortened form when entering data eg L = Large M = Medium S = Small Coding means you don’t have to type in so much data Home


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