Question: If a table R ( A , B , C ) already has a B + - tree index created on R ( A ,

If a table R(A, B, C) already has a B+-tree index created on R(A,B), then there is no benefit in creating another B +-tree index on R(B), because any query that can be sped up by the second index can be done just as fast using the first index

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Q:

need help on this Part 3 - Normalization [20 marks total] Case 1: The table R (A, B, C, D, E, F, G, H, Y) holds the following functional dependencies: FD1 A, C B, D, E, F, G, H, Y FD2 B H, Y FD3 G E,...

Q:

Consider a relation R (a, b, c, d) that has a clustering index on a and no clustering indexes on each of the other attributes. the relevant parameters are: B(R) = 1000, T(R) = 5000, V(R, a) = 20,...

Q:

Hello I would like to solve this homework today in detail, please Question 3 Given The following current state of the extendable hash index of relation R; insert 3 then 10 to the hash table where:...

Q:

Hello I would like to solve this homework today in detail, please Question 1 List the advantages and disadvantages of storing more than one relation in one file. Question 2 In the variable-length...

Q:

Emma was recently hired by Greenpower Ltd. as a junior budget analyst. She is working for the Venture Capital Division and has been given for capital budgeting projects to evaluate. She must give her...

Q:

Encryption and Decryption Using the Vigenere Cipher The Vigenere Table has been entered in cells A2 thru Z27 of the Lab3 spreadsheet. Encryption 1. Enter the encryption/decryption key (up to 7...

Q:

Exercise 7.4.6: Airline Tickets The ticketing system at the airport is broken, and passengers have lined up to board the plane in the incorrect order. The line of passengers has already been created...

Q:

Part 1 : Normalization 1 . Consider a table Alphabet ( A , B , C , D , E ) with the following functional dependencies: FD 1 : AB C FD 2 : AC B FD 3 : BC A FD 4 : D E a . Determine all the candidate...

Q:

(10 pts) Consider the problem of detecting similar papers in a history course. If the assignment was on a particular topic, then one would expect that many of the key terms related to the topic would...

Q:

1. (10 pts) Consider the problem of detecting similar papers in a history course. If the assignment was on a particular topic, then one would expect that many of the key terms related to the topic...

Q:

You are now required to develop a Contingency Plan , using Appendix A , for each area where something could go wrong and how you will recover demonstrating understanding of risks. Appendix A BOUNCE...

Q:

Dorex, Inc., presented the following comparative income statements for 2009, 2008, and 2007: Required a. Calculate the following for 2009, 2008, and 2007: 1. Net profit margin 2. Return on assets 3....

Q:

Company X does both taxable and non - taxable supplies and is also VAT registered. For the 2 0 2 4 year of assessment, Company X s income included R 6 5 0 0 0 0 of taxable supplies and R 2 5 0 0 0 0...

Q:

Which inventory costing method assumes that inventory costs flow out in the opposite order from which the goods were purchased? Multiple Choice FIFO LIFO Weighted average Specific identification

Q:

Question What special issues are involved in money purchase plans covering shareholder-employees in an S corporation?

Q:

Question What is the impact of the nondiscrimination regulations on defined benefit design, particularly for older owner-employees of closely held businesses?

Q:

Question What integration level should an employer choose?