Ask Question, Ask an Expert


Ask DBMS Expert

Home >> DBMS

Answer the following problems.

problem 1) Consider the following schedule and describe which schedules are conflict-equivalent and complete.

S1={R2(z),W2(x),W2(y),C2,W1(x),R1(x),A1, R3(x),R3(z),R3(y),C3}

S2={R3(z),W2(x),W2(y),R1(x),R3(x), R2(z),R3(y),C3,W1(x),C2,C1}

problem 2)a) Simplify the following query and check whether it is semantically correct or not.

Select eno from
ASG where
Resp = “Analyst”
AND NOT ( pno = “p2"
OR DUR = 12 )
AND pno ≠ “p2
AND DUR = 12

b) Given the relation EMP (ENO, ENAME, TITLE)
Let P1 & P2 be the two simple predicates where
P1 : TITLE < “programmer”
 P2 : TITLE > “programmer”

Suppose that char strings has order amongs then based on alphabetical order.

i) Perform the horizontal fragmentation of EMP with respect to P1 & P2

ii) Describe whether the resulting fragmentation emp1& emp2 fulfils the correctness rules of fragmentation or not?

iii) Modify predicates P1 andP2. if needed to satisfy correctness rules.

problem 3) Apply the algorithm INGRES to the following query and show the successive detachment and substitutions by giving mono-relation sub queries generated.

Select ename, sal from EMP, ASG , PROJ, Pay
Where EMP. eno = ASG . eno
AND EMP. title = Pay, title
AND Budget > 200000
OR DUR = 24

problem 4) Define deadlock? How deadlock can be managed?

problem 5) Describe the problems why DBMS bypass OS buffer manager and manage the disk & main memory.

problem 6) Describe the issues of global directory.

problem 7) Describe the process of localization.

problem 8) Which drawbacks of PC2PL are removed by D2PL?

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M95263

Have any Question? 

Related Questions in DBMS

Assignmentcreate a simple excel spreadsheet with data to

Assignment Create a simple excel spreadsheet with data to update the database. 1. Create a form (frmUpdateMediaLink) to link the spreadsheet to a table in the database (you can link the spreadsheet manually using the wiz ...

1 draw and explain erm diagram andnbsp explain what is

1. Draw and explain ERM diagram and  explain what is REM 2. Explain what is Normalization . what is 0NF,1NF, 2NFand ,3NF and explain what is in the tables Entity Relationship Modeling and Normalization: 1 System Analysis ...

Homeworkunlimited pickers is a group of workers who have

Homework Unlimited Pickers is a group of workers who have joined together to provide harvesting services to farmers who need to have their crops brought in. The organization has many teams of workers who travel from loca ...

Case problem-global site gps - kevin hodge is a production

Case Problem- Global Site GPS - Kevin Hodge is a production assistant at Global Site GPS, a leading manufacturer of GPS devices located in Crestwood, Missouri. One of Kevin's jobs is to monitor output at the company's fi ...

Assignment business rules for sam symthes

Assignment: Business Rules for Sam Symthe's Database Overview Sam Smyth is an expert puppy trainer. His specialty is training troubled puppies to behave for their owners. The name of his business is Sam Smythe's Kennel f ...

The discussion questionbased on your research and readings

The discussion question Based on your research and readings for the week, respond to the following discussion topics. • Often, systems have only one level of security when it comes to databases. Imagine that someone is t ...

Question - databasesuse database software such as microsoft

Question - Databases Use database software such as Microsoft Access or LibreOffice Base to perform the following actions. (Refer to Workshops 9 & 10 for help.) A. Create a new database. Add tables based on the design of ...

Data analysis projectyou have contracted with a local

Data Analysis Project You have contracted with a local school district to help them decide whether to use an interactive computer program or a standard chapter from a textbook to teach students to use fractions. The scho ...

Question 1use the tables below to answer the following

Question 1: Use the tables below to answer the following questions: customerid customerid firstname lastname city state 10101 John Gray Lynden Washington 10298 Leroy Brown Pinetop Arizona 10299 Elroy Keller Snoqualmie Wa ...

Oracle erp systemsoracle provides erp solutions for

Oracle ERP Systems Oracle provides ERP solutions for mid-size business organizations. For this assignment, you are to write a research report on these ERP solutions. Your report should include: • a description of Oracle ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen