Premium Essay

Database Management

In: Computers and Technology

Submitted By raadhika
Words 1108
Pages 5
CIS 260

Home Work # 1

Due to: 21/3/2013

Chapter 1: Review Questions
1.1. Define the following terms: data, database, DBMS, database system, database catalog, program-data independence, user view, DBA, end user, canned transaction, meta-data, and transaction-processing application. 1.2. What four main types of actions involve databases? Briefly discuss each.
1.3. Discuss the main characteristics of the database approach and how it differs from traditional file systems.
1.4. What are the responsibilities of the DBA and the database designers?
1.5. What are the different types of database end users? Discuss the main activities of each.
1.6. Discuss the capabilities that should be provided by a DBMS.
1.7. Discuss the differences between database systems and information retrieval systems.

Chapter 2: Review Questions
2.1. Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, data independence, DDL, DML, SDL, VDL, query language, host language, data sublanguage, database utility, catalog, client/server architecture, three-tier architecture, and n-tier architecture. 2.2. Discuss the main categories of data models. What are the basic differences between the relational model, the object model, and the XML model?
2.3. What is the difference between a database schema and a database state?
2.4. Describe the three-schema architecture. Why do we need mappings between schema levels? How do different schema definition languages support this architecture?
2.5. What is the difference between logical data independence and physical data independence? Which one is harder to achieve? Why?
2.6. What is the difference between procedural and nonprocedural DMLs?
2.7. Discuss the different types of user-friendly interfaces and the types of users who typically use each.
2.8. With what other computer system software does

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