Exam (elaborations)
Database Design With Complete Solutions Latest Update
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Database Design With Complete Solutions Latest Update
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Database Design With Complete Solutions LatestUpdate
Data - correct answers Facts that can be recorded and stored using computer
media
Information - correct answers Data processed to increase the knowledge of the
people who use it
Database Management System (DBMS) - correct answers General-purpose
software system that facilitates the processes of defining, creating, using, and
maintaining databases
Database - correct answers An organized collection of logically related data.
Includes data and metadata.
data - correct answers the actual values of interest
Metadata - correct answers Data that describes the properties or charac-teristics
of other data (a means of providing context for data)
Data dictionary - correct answers location where definitions of data (metadata) are
maintained
,Data access - correct answers read, insert, update, and delete
Rows - correct answers unique instances or records of entity
Columns - correct answers store attribute data
Primary key - correct answers Enforces uniqueness for each record
Foreign keys - correct answers Define relationships between tables
Object-Relational Database Model - correct answers Combine:
Ability of object technology to handle advanced relationship types
Data integrity, reliability, and recovery features of the traditional relational model
Represented by the most popular and powerful of modern database management
systems
E.g., Oracle, IBM DB2, Microsoft SQL Server
Transaction Processing Systems (TPS) - correct answers Designed to support the
processing of everyday operational business transactions (i.e., retrieving, adding,
modifying, and deleting data)
Represent the vast majority of database systems
, Are the primary focus of this course
Decision Support Systems (DSS) - correct answers Specifically designed to aid
managers in decision-making tasks
Contain data that has been accumulated over time to aid in trend analysis and
forecasting
Data about subjects must be organized in such a way that it provides a unified,
overall picture of all the important details about the subjects over time
Data warehouses are the most common example
Data marts are subsets of data warehouses designed to support a part of an
organization
Business rules - correct answers Can be used to define or constrain some aspect of
a business's structure or processes
Database systems should support business rules that are relevant to the specific
functions supported by the system
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