October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth Edition
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Day 13
Quiz
| 1: | From where is the system date and time for a relational database normally derived? |
| A1: | The system date is derived from the current date and time of the operating system on the host machine. |
| 2: | List the standard internal elements of a DATETIME value. |
| A2: | YEAR, MONTH, DAY, HOUR, MINUTE, SECOND. |
| 3: | What could be a major factor concerning the representation and comparison of date and time values if your company is an international organization? |
| A3: | The awareness of time zones may be a concern. |
| 4: | Why is it not a good idea to store an individual's age in a database? |
| A4: | An individual's age changes from day to day and with every second of every day. It is better to store more constant values in a database if possible, such as an individual's ... |
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