Week 3

Topics: SQL, Database management system, Relational model Pages: 4 (754 words) Published: November 24, 2012
Student Exam

1/16/12 9:14 AM

Week 3 : Managing Assets and Resources in the Digital Firm - Homework Save Answers Submit for Grading

1. A characteristic or quality describing an entity is called a(n) (Points : 1)

field. tuple. key field. attribute.
2. The confusion created by _____ makes it difficult for companies to create customer relationship management, supply chain management, or enterprise systems that integrate data from different sources. (Points : 1)

batch processing data redundancy data independence online processing 3. Duplicate data in multiple data files is called (Points : 1)

data redundancy. data multiplication. data independence. data backups. 4. A DBMS (Points : 1)

makes the physical database available for different logical views. makes the logical database available for different analytical views. makes the physical database available for different analytical views. makes the relational database available for different analytical views. 5. The logical view (Points : 1)

shows how data are organized and structured on the storage media. presents an entry screen to the user. allows the creation of supplementary reports. presents data as they would be perceived by end users. 6. The type of logical database model that treats data as if they were stored in two-dimensional tables is the (Points : 1)

OODBMS. pre-digital DBMS. relational DBMS. hierarchical DBMS. 7. A field identified in a table as holding the unique identifier of the table's records is called the (Points : 1)

primary key. key field.


Page 1 of 3

Student Exam

1/16/12 9:14 AM

primary field. unique ID.
8. The data dictionary serves as an important data management tool by (Points : 1)

assigning attributes to the data. creating an inventory of data contained in the database. presenting data as end users or business...
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