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Database design, and information storage and retrieval

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ICT for Library <strong>and</strong> Information Professionals: A Training Package for Developing Countries<br />

Student’s Guide<br />

Slide 22<br />

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Sorting <strong>information</strong><br />

v Sort parameters :<br />

• Sort key parameters: up to four sort keys<br />

may be specified. If more than one record<br />

has the same sort key (Author) then a<br />

second sort key can be used to sort them.<br />

If a record does not have the primary sort<br />

key it will not appear in the sorted list.<br />

UNESCO ICTLIP Module 4. Lesson 4<br />

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Slide 23<br />

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Sorting <strong>information</strong><br />

v Sort key parameters : for each sort key<br />

three sets of <strong>information</strong> have to be<br />

provided<br />

• Key length: This defines how many<br />

characters are to be taken from the<br />

specified field.<br />

• Heading processing indicator: You can<br />

select 0,1,2,or 3. Your choice should depend<br />

on what you intend to produce. For example,<br />

a catalog card would be 1, <strong>and</strong> an accession<br />

list would be 0<br />

UNESCO ICTLIP Module 4. Lesson 4<br />

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Slide 24<br />

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Sorting <strong>information</strong><br />

vA Field selection table: This is similar<br />

to the FST lines in the database<br />

definition services. Here data are<br />

selected to act as sort keys. Eg. 1 0<br />

(v10/) This selects sort key 1 , using<br />

the whole field from field 10<br />

(repeatable field)<br />

UNESCO ICTLIP Module 4. Lesson 4<br />

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Module 4:<strong>Database</strong> Design, <strong>and</strong> Information Storage <strong>and</strong> Retrieval: Lesson 4 Page 38 of 59

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