3024.S08.HW1 - ISE 3024 Data Management for IEs Spring 2008...

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1 of 3 ISE 3024 Data Management for IEs Thursday, January 24 Spring 2008 Homework Assignment #1 DUE: Thursday, January 31 (AT START OF CLASS) (9) 1. Many different things (e.g., type of data) must be considered in developing an effective data management solution. List and briefly describe three things (besides type of data) that should be considered. (10) 2. You have the following list of items in inventory: ITEM LOCATION QUANTITY A S1 14 B S4 28 C S3 15 D S1 30 E S2 5 What do the terms field , data , record type , record , and file correspond to for this list? (9) 3. Consider again the list of inventory items from problem 2. You now have an additional list specifying the corresponding purchasing data as follows: ITEM UNIT COST VENDOR A 5.45 V3 B 1.10 V1 C 6.50 V1 D 9.99 V4 E 4.69 V6 Considering both lists, provide an example of (a) simple record retrieval. (b) a single-file query involving multiple records. (c) a cross-referenced query. (9) 4. (a) What are the two main components of database systems? Briefly defined the role of each component. (b) What is the main difference between the database approach and file-based methods, in terms of how data is modeled and stored?
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