Consider a clustered B+tree on the search key k= (Alternative (2) for data entries) and the...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Consider a clustered B+tree on the search key k= (Alternative (2) for data entries) and the following queries: Query 1: Query 2: a>=100 AND b=5 a=100 AND b>=5 For each query: 1.) Explain how to use the B+tree index to retrieve the query result. 2.) What is the search key value used for descending the tree (Assume that the minimum value for a,b,c is 0), how each term (condition) is checked, and which terms help reduce the IO cost and which terms do not? Assume that the number of data record pages is much larger than the number of data entry pages, therefore, you should use as many terms as possible to reduce the IO cost of retrieving data record pages. Note: Alternative 2 for data entries = Consider a clustered B+tree on the search key k= (Alternative (2) for data entries) and the following queries: Query 1: Query 2: a>=100 AND b=5 a=100 AND b>=5 For each query: 1.) Explain how to use the B+tree index to retrieve the query result. 2.) What is the search key value used for descending the tree (Assume that the minimum value for a,b,c is 0), how each term (condition) is checked, and which terms help reduce the IO cost and which terms do not? Assume that the number of data record pages is much larger than the number of data entry pages, therefore, you should use as many terms as possible to reduce the IO cost of retrieving data record pages. Note: Alternative 2 for data entries =
Expert Answer:
Answer rating: 100% (QA)
The image contains a textbased question regarding the usage of a clustered Btree index with a composite search key of The question includes two querie... View the full answer
Related Book For
Database management systems
ISBN: 978-0072465631
3rd edition
Authors: Raghu Ramakrishan, Johannes Gehrke, Scott Selikoff
Posted Date:
Students also viewed these programming questions
-
Let A, B be sets. Define: (a) the Cartesian product (A B) (b) the set of relations R between A and B (c) the identity relation A on the set A [3 marks] Suppose S, T are relations between A and B, and...
-
Planning is one of the most important management functions in any business. A front office managers first step in planning should involve determine the departments goals. Planning also includes...
-
Remove left recursion in the following grammar. Show each step. Hint: First remove direct left recursion. Then the indirect left recursion. A AB | Aab | BA| a Bb | | b
-
Martha Gentry won an $18 million lottery and elected to receive her winnings in 30 equal annual installments. After receiving the first 10 installments, Martha and her husband divorced, and the...
-
Elizabeth Burke wants some detailed statistical information about much of the data in the PLE database. In particular, she wants to know the following: a. The mean satisfaction ratings and standard...
-
A neutron is shot straight up with an initial speed of \(100 \mathrm{~m} / \mathrm{s}\). As it rises, does its de Broglie wavelength increase, decrease, or not change? Explain.
-
Pohle Designs has a department that makes high-quality leather cases for iPads. Consider the following data for a recent month: Budget Formula per Unit Various Levels of Output 10.000 1.000 12000...
-
There are three primary types of specifications - design, performance and proprietary - discussed in the text and Lecture Material. Talk detail about Design specifications - what it is, pro's and/or...
-
IMHO Inc. issues a 13 year bond with a 6.750% coupon and a $100,000,000.00 face value. The yield rate on the bond is 9.750% compounded monthly. They will set up a sinking fund with annual deposits...
-
The total cost of quality is defined as Question 27 options: The sum of costs of conforming and costs of quality assurance. The sum of inspection costs for all purchased materials. The sum of scrap,...
-
Why does using the Charge Description Master create concern when trying to comply with the CMS requirements for price transparency? Question 189 options: Consumers may not have access to the price...
-
Which examples show the basic rules of capitalization being applied correctly? Instruction: Choose all options that best answer the question. Answer Choices As a manager, ask yourself, How would I...
-
How do financial managers use Remittance Advice information? Question 193 options: to determine any applicable cost sharing to move the revenue cycle to its conclusion to look for breakdowns in the...
-
Every manager has different skills, and specialties of expertise. It is quite possible that you could be in a situation where you see something that someone else does not see, especially if they are...
-
An asset with a cost of $15,000, useful life of 5 years or 16,000 units, and residual value of $2,000 was purchased on Jan 1, 2012. The asset produced 3,000 units in first year, 4,000 units in the...
-
A bar of length = 1 has one fixed and one free end and stiffness function c(x) = 1 - x. Find the displacement when subjected to a unit force. Pay careful attention to the boundary condition at the...
-
Discuss the strengths and weaknesses of the trigger mechanism. Contrast triggers with other integrity constraints supported by SQL.
-
Give an algorithm for testing whether a relation scheme is in BCNF. The algorithm should be polynomial in the size of the set of given FDs. (The size is the sum over all FDs of the number of...
-
Consider the following relations: Student(snum: integer, sname: string, major: string, level: string, age: integer) Class(name: string, meets at: string, room: string, fid: integer) Enrolled(snum:...
-
Suppose we record the gender of the 15 students enrolled in an introductory statistics course as they enter the classroom. The males are denoted by a blue M and the females are denoted by a red...
-
First-Year College GPA Researchers at the College Board wanted to build a model that describes one's first-year college GPA. The researchers obtained the following model: \[\hat{y}=0.06 x_{1}+0.07...
-
A nutritionist wants to develop a model that describes the relation between the calories, total fat content, protein, sugar, and carbohydrates in cheeseburgers at fast-food restaurants. She obtains...
Study smarter with the SolutionInn App