{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Ch2-DB - Ch2-DB True/False Indicate whether the statement...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Ch2-DB True/False Indicate whether the statement is true or false. ____ 1. A relational database handles entities, attributes, and relationships by storing each entity in its own table. ____ 2. The attributes of an entity become the fields or columns in a table. ____ 3. Each column in a table should have a unique name, and entries in each column should all “match” this column name. ____ 4. In a relation, the order of the columns is important. ____ 5. In a relation, the order of rows is important. ____ 6. An unnormalized relation is a table that has more than one row. ____ 7. A column whose value uniquely identifies a given row in the table is the secondary key. ____ 8. A query is a question represented in a way that the DBMS can recognize and process. ____ 9. QBE is a visual approach to writing queries. ____ 10. The comparison operators are +, *, %, and /. ____ 11. In an AND criterion, the overall criterion is true if either of the individual criteria is true. ____ 12. The concept of grouping means that statistics will be calculated for individual records. Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 13. A relation is a(n) ____. a. attribute c. field b. column d. table ____
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

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