1 / 13

CS 101 Attendance

CS 101 Attendance. 3/20/2013. This table has how many records?. 3 4 12 24. Each record in this table has how many fields?. 3 4 12 24. An appropriate use for a database management system is. The text for your research paper The budget for next month The names of all your MP3’s

brand
Download Presentation

CS 101 Attendance

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CS 101 Attendance 3/20/2013

  2. This table has how many records? • 3 • 4 • 12 • 24

  3. Each record in this table has how many fields? • 3 • 4 • 12 • 24

  4. An appropriate use for a database management system is • The text for your research paper • The budget for next month • The names of all your MP3’s • The classes you are taking this semester

  5. An integer is different from a single-precision number in that • Integers are not allowed in databases • Single-precision numbers can have fractions in them, integers cannot • Integers take up less space to store than a single-precision number • Integers are obsolete, single-precision numbers are used instead

  6. A database system used for e-commerce is • Oracle • MS Access • Lotus 1-2-3 • mySQL • 1 and 4

  7. A query is • not allowed in databases • A rule that all data must follow • A request for records that match a given pattern • Only allowed on number fields

  8. What does it mean for two users to access a database concurrently? • They are on the same computer • They are using the same DBMS at the same time • They are reading from the same database file across a network • It's impossible

  9. If you wanted to ask the query, "who are the customers from Kentucky OR Virginia?" • You must ask for one state at a time • You put the criteria on the same line of the query • You put the criteria on different lines • Either 2 or 3 will work

  10. What sort the following table is based on? • This is sorted by Size within Color • This is sorted by Color within Size • It could be either

  11. Two users accessing a database file concurrently • is impossible, only one user per file can be done • is ok as long as they are just READING • is prevented in MS Access by a “lock” file • is possible and perfectly ok for any file

  12. Relationships between tables are • represented by matching values in key fields • are stored by pointers behind the scenes • are not possible • one-to-one, one-to-many or many-to-many • more than one of the above are correct

  13. Referential integrity • means the DBMS keeps the relationships between tables consistent • means you may not be able to delete a record because it is involved in a relationship • is the same thing as data validation • more than one of these answers is right

More Related