Ask DBMS Expert


Home >> DBMS

1) describe the system structure of the database system in detail.

2)(a) prepare down the functions of a DBA.

(b) Demonstrate the issues to be considered while developing the ER-diagram.

3)(a) Let the relational database:

employee (emp name, street, city)
works (emp name, company name, salary)
company (company name, city)
manages (emp name, manager name)

prepare down the expression in relational algebra for each request:

(i) Determine the names of all employees who work for First Bank Corporation.

(ii) Determine the names, street addresses, and cities of residence of all employees who work for First Bank Corporation and earn more than 200000 per annum.

(iii) Determine the names of all employees who earn more than every employees of Small Bank Corporation.

(iv) Determine the names of all employees in this database who live in the same city as the company for which they work.

(b) What do you mean by nested queries?

4)(a) prepare down the relational algebra operations supported in SQL? prepare down the SQL statement for each operation.

(b) Describe in detail about Query languages.

5) describe on two-phase locking protocol and timestamp – based protocol.

6)(a) prepare down the difference between primary index and secondary index.

(b) Describe in detail about Hash functions.

7)(a) What is meant by normalization?  Describe 1NF, 2NF, 3NF and BCNF with suitable exs.

(b) Describe the role of FD in the process of normalization.

8)(a) prepare down the features of object oriented database.

(b) Compare OODBMS with ORDBMS.

9) Describe the different approaches in which data can be fragmented in a distributed database.  Describe with suiatble ex.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M913185

Have any Question?


Related Questions in DBMS

Data mining assignment -in this assignment you are asked to

Data Mining Assignment - In this assignment you are asked to explore the use of neural networks for classification and numeric prediction. You are also asked to carry out a data mining investigation on a real-world data ...

Sql query assignment -for this assignment you are to write

SQL Query Assignment - For this assignment you are to write your answers in a word document. This assignment is in three parts: Part A (reporting queries), Part B (query performance), Part C (query design). For this assi ...

The groceries datasetimagine 10000 receipts sitting on your

The groceries Dataset Imagine 10000 receipts sitting on your table. Each receipt represents a transaction with items that were purchased. The receipt is a representation of stuff that went into a customer's basket. That ...

You are in a real estate business renting apartments to

You are in a real estate business renting apartments to customers. Your job is to define an appropriate schema using SQL DDL in MySQL. The relations are Property(Id, Address, NumberOfUnits), Unit(ApartmentNumber, Propert ...

Objectivethe objective of this lab is to be familiar with a

OBJECTIVE: The objective of this lab is to be familiar with a process in big data modeling. You're required to produce three big data models using the MS PowerPoint software. This tool is available on UMUC Virtual Deskto ...

The relation memberstudentid organizationid roleid stores

The relation Member(StudentId, OrganizationId, RoleId) stores the membership information of student joining organization. For example, ('S1', 'O2', 'R3') indicates that student with Id 'S1' joined the organization with i ...

Relational database exerciseyou have been assigned to a new

Relational Database Exercise: You have been assigned to a new development team. A client is requesting a relational database system to manage their present store with the anticipation of adding more stores in the future. ...

Relational database design a given the following business

Relational Database Design A) Given the following business rules, identify entity types, attributes (at least two attributes for each entity, including the primary key) and relationships, and then draw an Entity-Relation ...

We can represent a data set as a collection of object nodes

We can represent a data set as a collection of object nodes and a collection of attribute nodes, where there is a link between each object and each attribute, and where the weight of that link is the value of the object ...

Data model development and implementationpurpose of the

Data model development and implementation Purpose of the assessment (with ULO Mapping) The purpose of this assignment is to develop data models and map Database System into a standard development environment to gain unde ...

  • 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

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As