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COP4020_Chapter_10

QuestionAnswer
Data may be stored in the following formats _____. files and databases
A(n) _____ is less expensive and easier for novice users to use, but it does not have the features that are necessary to support mission-critical or large scale systems. end-user database management system
A(n) _____ can support large volumes of data and support applications that run an entire company. enterprise database management system
A(n) _____ is basically an electronic list of information that is stored on a disk. unordered sequential access file
SQL operates on _____. tables of data at a time
Which of the following is NOT a characteristic of current object-relational databases? support for inheritance
In an object-oriented database, an extent is the equivalent to a(n) _____ in a relational database. table
The type of database that is most capable of supporting complex data types is _____. object-oriented DBMS
The process of ensuring that values linking tables together through the primary and foreign keys are valid and correctly synchronized is _____. referential integrity
A relational database may be optimized for _____. storage efficiency and speed of access
A(n) _____ occurs when data are stored redundantly in a database and only some of the instances are updated when a change is needed. update anomaly
A data model that does not contain repeating fields and that the data models leads to tables containing fields that are dependent on a whole primary key is in _____ normal form. second
If the data model does not have any repeating fields it is in _____. first normal form
If the logical data model contains fields that depend on another non-primary key field, then it is in violation of the rules of _____. third normal form
In order to reduce the number of joins that must be performed in a query and to increase the speed of data access, the data analyst will _____ the physical model. denormalize
To improve the access speed of a database, similar records in a table are stored together in primary key order. This optimizing access speed process is called _____. intrafile clustering
_____ is the process of estimating the amount of data that the hardware will need to support, so that the server hardware specifications are sufficient for the project’s Volumetrics
The size of a database is determined by the _____. amount of raw data in the tables and overhead requirements for the DBMS
A mini-table that contains values from one or more columns in a table and the location of the values within the table is called a(n) _____. index
Created by: ohmsy
 

 



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