Question: What is concurrency control and why does a DBMS need a concurrency control facility? Discuss the importance of concurrency control and explain the various levels

What is concurrency control and why does a DBMS need a concurrency control facility?

Discuss the importance of concurrency control and explain the various levels of locking.

Step by Step Solution

★★★★★

3.37 Rating (147 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Concurrency control is a mechanism used in database management systems DBMS to ensure that database transactions are performed concurrently without violating the consistency of the database It helps m... View full answer

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!

Instructions: - Define the following terms. You can use outside research to augment that information. You must paraphrase the definitions and cite the source for the definition. Terms to define: Data...

explain the following 1. Evolution of relational databases as a tool for information management 2. What is concurrency control and why does a DBMS need a concurrency control facility. 3.Why is...

What is concurrency control and why does a Database Management Systems need a concurrency control facility?

2.22.32.42.82.13 2.1 Explain the concept of database schema and discuss the three types of schema in a database. 2.2. What are data sublanguages? Why are they important? 2.3 What is a data model?...

2.2 To address the issue of data independence, the ANSI-SPARC three-level architecture was proposed. Compare and contrast the three levels of this model. 2.3 What is a data model? Discuss the main...

Define the following terms. You can use outside research to augment that information. You must paraphrase the definitions in your own words and cite the source for the definition. Terms to define:...

Database Administration CHAPTER OBJECTIVES I Understand the need for and importance of database I ttno'illI the meaning of ACID transaction administralin - Learn the tour 1992 ANSI standard isolation...

Portray in words what transforms you would have to make to your execution to some degree (a) to accomplish this and remark on the benefits and detriments of this thought.You are approached to compose...

1. Answer the following two questions. a. Identify and describe two types of facility you would expect to be provided in a multi-user DBMS. Identify two types of facility that not be needed in a...

A certain sum amounts to Rs. 15,500 in 2 years at 12% p.a. simple interest. The same sum will amount to what in 1 years at 10% p.a., if the interest is compounded half yearly (nearest to Re. 1)? (A)...

The attenuator shown in Figure 44.18 feeds a matched load. Determine (a) the characteristic impedance Ro and (b) the insertion loss in decibels R - 3000 V 4 R 450 Figure 44.18 R - 3000 V/ 42 Ro

q , 8 of 2 5 Concepsts compreted Multiple Select Question Select all that apply Determine which of the statements below are occurote regarding how a petty cash fund is created and used in a business....

A. Which one of the following deductions is available under S25-5 ITAA97 (Tax related expenses) Choose the best answer! a. Payment of Income Tax b. Fees paid to a tax agent to do a Tax Return c. Fees...

A silicon thin film can be grown in the following three film deposition methods: Electron-beam evaporation with a small 10 cm? area Si source, the distance from the source to substrate is 5 cm and...

Philadelphia Fastener Corporation manufactures nails, screws, bolts, and other fasteners. Management is considering a proposal to acquire new material-handling equipment. The new equipment has the...

Ray Polo owns a variety store called Stars Forever. The following are purchases of inventory, returns, and discounts for the month of March. Mar. 2 Purchased $2,000 of merchandise from Sundance...

Valley View Inc., a U.S. corporation, formed a wholly owned Mexican corporation to conduct manufacturing and selling operations in Mexico. In its first year of operations, the Mexican corporation...

A shaft carries five masses A, B, C, D and E which revolve at the same radius in planes which are equidistant from one another. The magnitude of the masses in planes A, C and D are 50 kg, 40 kg and...

For each of the following SQL queries, for each relation involved, list the attributes that must be examined to compute the answer. All queries refer to the following relations: Emp(eid: integer,...

Consider the instance of the Students relation shown in Figure 3.1. FIELDS (ATTRIBUTES, COLUMNS) An Instance S1 of the Students Relation 1. Give an example of an attribute (or set of attributes) that...

Does the relational model, as seen by an SQL query writer, provide physical and logical data independence? Explain.

Find the least-squares prediction line for the calculus grade data in Table 12.1. Table 12.1 Mathematics Achievement Test Scores and Final Calculus Grades for College Freshmen Mathematics Achievement...

18. A population consists of N 55 numbers: 1, 3, 5, 6, and 7. It can be shown that the mean and standard deviation for this population are m 54.4 and s 52.15, respectively. a. Construct a probability...

Graph the line corresponding to the equation by graphing the points corresponding to x=0, 1, and 2. Give the y-intercept and slope for the line. |1. y=2x+1