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INF2603 Ch1 – The Database Approach – True / False

Data and information are essentially the same thing.
False.
Data is raw fact.
Information is processed data.
Data processing can be as simple as organizing data to reveal patterns.
True
We are now said to be entering the “knowledge age.”
True
Information implies familiarity, awareness, and understanding knowledge as it applies to an environment.
False
KNOWLEDGE implies familiarity, awareness and understanding of INFORMATION as it applies to an environment.
Data constitute the building blocks of information.
True
Metadata present a more complete picture of the data in the database than the data itself.
True
The only way to access the data in a database is through the DBMS.
True
Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests.
False
The DBMS reveals much of the database’s internal complexity to the application programs and users.
False
One disadvantage of the DBMS is that it increases the risk of data security breaches.
False
The DBMS DECREASES the security risk.
An operational database is sometimes referred to as an enterprise database.
False
operational / OLTP / transactional / production database
enterprise database refer to size – used by entire organisation, support many users
A data warehouse can store data derived from many sources.
True
The same data might be simultaneously structured and unstructured depending on the intended processing.
True
Corporations use only structured data.
False
Unstructured data is used to produce structured data. Both types are used.
Historically, a manual file system was composed of a system of file folders and filing cabinets.
True
Initially the files within a computer file system were similar to manual files.
True
Structural dependence exists when it is possible to make changes in the file structure without affecting the application program’s ability to access the data.
False
Structural INDEPENDENCE exists when you can change the file structure without affecting the application’s ability to access the data.
A query language is a procedural language.
False
A query language is a NON-PROCEDURAL language (user specifies WHAT without having to specify HOW).
One disadvantage of a database system over previous data management approaches is increased costs.
True
One advantage of a database system over previous data management approaches is that the database system is considerably less complex.
False
Advantages:
improved data sharing, data security, data integration
improved data access, decision making, end-user productivity
minimised data inconsistency

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