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AIS Questions and Answers graded A+
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AIS Questions and Answers graded A+ Database organized collection of data Entity a thing you want to remember - resource/thing - event - agent/person - location What are the 4 steps to database design? 1) identify entities 2) identify attributes 3) identify relationships bet...

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  • August 4, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ais questions and answers graded a
  • database organized collection of data
  • entity a thing you want to remember resourcethi
  • what are the 4 steps to database design 1 identi
  • primary key an attribute tha

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AIS Questions and Answers graded A+

Database - answer organized collection of data

Entity - answer a thing you want to remember
- resource/thing
- event
- agent/person
- location

What are the 4 steps to database design? - answer 1) identify entities
2) identify attributes
3) identify relationships between entities
4) identify the cardinality of relationships

Primary Key - answer an attribute that uniquely identifies each record, instance, or
occurrence in a database.

Entity Integrity Rule - answer each entity/table must have a primary key attribute that
uniquely identifies it

E-R diagram - answer Entity Relationship diagram
it is a data model that stores our data into tables and relates the tables to one another

Where is data stored? - answer in tables

If an attribute may have multiple values, it is probably a separate entity; true or false? -
answer true

Column - answer attribute, field

Row - answer instance, record

What is stored in the columns of a table? - answer an attribute or field

What is stored in the rows of a table? - answer an instance or record

Information - answer data + meaning/insight

Metadata - answer data about data
(tables store data, database stores metadata)

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