Chapter 7 - Chapter 7 1 Which of the following query interfaces is intended to be more point-and-click in nature and to require less user expertise

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 7 1. Which of the following query interfaces is intended to be more point-and-click in nature and to require less user expertise? A) Relational Algebra B ) Structured Query Language (SQL) C)Query By Example D) Standard Query E ) Relational Calculus 2. Which of the following is necessary for effective information retrieval? A) The database is well designed B) The query designer has a thorough knowledge of the database table structures and the nature of the data in the tables. C) The query designer adequately understands the desired output. D) The query designer knows the querying language used to retrieve information from the enterprise's database. E ) All of the above are necessary for effective information retrieval. 3. Which of the following is NOT a relational algebra operators used in basic queries? A)Locate B) Projec t C) Join D) Select E ) All of the above are relational algebra operators used in basic queries.
Background image of page 1

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

View Full DocumentRight Arrow Icon
4. Which relational algebra operator can be used to eliminate duplicate columns or filter out
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/17/2011 for the course ACCOUNTING 425 taught by Professor Stebbins during the Fall '11 term at Franklin.

Page1 / 4

Chapter 7 - Chapter 7 1 Which of the following query interfaces is intended to be more point-and-click in nature and to require less user expertise

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online