IT131 true and false.docx - LONG QUIZ 1 An...

This preview shows page 1 - 5 out of 17 pages.

LONG QUIZ 1 An implementation-ready data model needn't necessarily contain enforceable rules to guarantee the integrity of the data. True False 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. True False Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests. True False When data are entered into a form and saved, they are placed in the underlying database as knowledge. True False One disadvantage of a database system over previous data management approaches is increased costs. True False In an SQL-based relational database, rows in different tables are related based on common values in common attributes. True False An advantage of database systems is that you needn't perform frequent updates and apply latest patches. True False In an SQL-based relational database, each table is dependent on every other table.
Image of page 1
True False A disadvantage of the relational database management system (RDBMS) is its inability to hide the complexities of the relational model from the user. True False The only way to access the data in a database is through the DBMS. True False Metadata describe the data characteristics and the set of relationships that links the data found within the database. True False Structure is based on the type of processing to be performed on the data. True False In the context of data models, an entity is a person, place, thing, or event about which data will be collected and stored. True False Business rules apply to businesses and government groups, but not to other types of organizations such as religious groups or research laboratories. True False
Image of page 2
Today, most relational database products can be classified as object/relational. True False One disadvantage of the DBMS is that it increases the risk of data security breaches. True False Data and information are essentially the same thing. True False Business rules must be rendered in writing. True False One advantage of a database system over previous data management approaches is that the database system is considerably less complex. True False The external model is the representation of the database as "seen" by the DBMS. True False An operational database is sometimes referred to as an enterprise database. True False Data anomaly is defined as the condition in which all of the data in the database are consistent with the real-world events and conditions. True False
Image of page 3
Each row in the relational table is known as an entity instance or entity occurrence in the ER model.
Image of page 4
Image of page 5

You've reached the end of your free preview.

Want to read all 17 pages?

  • Fall '19
  • Entity-relationship model, Relational model, Database normalization

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes