October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth Edition
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Q&A
| Q1: | I have actually used roles and triggers before. Were they not a part of the standard before? |
| A1: | Some implementations have used roles and triggers; however, they have not actually been implemented into the ANSI SQL standard until now. |
| Q2: | What value does the CREATE TYPE statement add to SQL3? |
| A2: | The CREATE TYPE statement offers the availability of object-relational technology. You can define and use your own UDTs. These UDTs allow you more flexibility when defining the structure of your database, and when organizing the data. |
| Q3: | I understand about views being difficult to manage; would you consider the use of roles difficult to manage? |
| A3: | The management of roles could become as difficult as views. The number of roles used, the combinations ... |
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