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Databases – Exam questions
Candidates should be able to: a. describe the terms typically used in relational database terminology: tables, primary keys, fields, records, relationships, foreign keys, duplicate data, referential integrity, entity, attribute, explaining the role and purpose of each; b. identify tables, records, fields, primary keys and foreign keys, and interpret and create entity relationship diagrams for a given scenario; c. identify the characteristics of data in unnormalised (0NF), first normal form (INF), second normal form (2NF) and third normal form (3NF); d. describe the advantages and disadvantages of normalisation; e. describe the components of a data dictionary; f. select appropriate data types for a given set of data, and explain the advantages and disadvantages of alternative data types; g. describe dynamic and static parameter queries and simple and complex queries and explain when and how they might be used, giving examples of use.
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a. describe the terms typically used in relational database terminology: tables, primary keys, fields, records, relationships, foreign keys, duplicate data, referential integrity, entity, attribute, explaining the role and purpose of each;
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Jan 2012
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Jan 2012
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Jan 2013
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Jan 2013
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June 2015
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b. identify tables, records, fields, primary keys and foreign keys, and interpret and create entity relationship diagrams for a given scenario;
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Jan 2012
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Jun 2012
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June 2013
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June 2015
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c. identify the characteristics of data in unnormalised (0NF), first normal form (INF), second normal form (2NF) and third normal form (3NF);
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June 2012
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June 2013
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d. describe the advantages and disadvantages of normalisation;
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Jan 2012
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e. describe the components of a data dictionary;
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Jan 2012
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June 2014
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f. select appropriate data types for a given set of data, and explain the advantages and disadvantages of alternative data types;
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Jun 2012
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Jan 2013
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Jan 2013
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June 2013
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June 2014
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June 2015
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g. describe dynamic and static parameter queries and simple and complex queries and explain when and how they might be used, giving examples of use.
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Jun 2012
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June 2013
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June 2014
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June 2015
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