Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

problem 1:

Design the ER diagram for an XYZ Information Technology Training Institute which would meet information requirements for their training programmes. Clearly indicate entities, relationships, cardinality and the key constraints. The explanation of the environment is as follows:

Institute has 15 instructors and could handle upto 100 trainees for each training session. Institute offers 5 advanced technology courses, each of which is taught by the team of 2 or more instructors. Each instructor is allotted to the maximum of two teaching teams or might be assigned to do research each trainee undertakes one Advanced technology course per training session.

problem 2: 

Staff No.    Branch No.    Branch Address                    Name     Position      Hrs/Week
E101           B02             Sun Plaza, Delhi, 110001     Rahul       Assistant     16
E101           B04             2/3 UT, Delhi, 110111         Rahul       Assistant     9
E122           B02             Sun Plaza, Delhi, 110001     Medha     Assistant     14
E122           B04             2/3 UT, Delhi, 110111         Medha     Assistant     10

Do the Normalization for above given table.

problem 3:  

Describe how “GROUP By” clause works. What is the difference between the WHERE and HAVING clauses? Describe them with the help of ex for each.

problem 4:   

Given the relational schema:
ENROL (S#, C#, Class) - S# represents student number
TEACH (Prof, C#, Class) - C# represents course number
ADVISE (Prof, S#) - Prof is project guide of S#
PRE_REQ (C#, Pre_C#) - Pre_C# is prerequisite course
GRADES (S#, C#, Grade, Year)
STUDENT (S#, Sname) - Sname is student name

Give queries expressed in relational algebra, tuple calculus and domain calculus for the following:

(i)   List all students taking courses with Prof Ashok.

(ii)  List all student names who have chosen Prof Rahul as project Guide.

(iii) List those professors who teach more than one class.

(iv) List all student names who got Grade A in the year 2012 in C# P202.

(v)  List all students who have taken the pre-requisite course Pre_C# P304.

Note: Make appropriate assumptions, if any.

problem 5: 

What are the advantages of indexed-sequential file organisation? With the help of the ex describe the structure of indexed-sequential file.

problem 6:   

prepare the differences between Hierarchical, Network and Relational data models with the help of appropriate exs. Describe why relational data model is a better choice over the two. Justify the answer.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M92165

Have any Question? 


Related Questions in DBMS

Describe a database that might be used in nursing using

Describe a database that might be used in nursing. Using this data, explain the relationship between a field, a record, a table and a database. In addition, what are the advantages of managing database information in Acc ...

Assignment database modeling and normalizationimagine that

Assignment: Database Modeling and Normalization Imagine that you work for a consulting firm that offers information technology and database services. Part of its core services is to optimize and offer streamline solution ...

Assignmentthis assignment consists of two sections a design

Assignment This assignment consists of two sections: a design document and a revised Gantt chart or project plan. You must submit both sections as separate files for the completion of this assignment. Label each file nam ...

Select one of the four primary categories of terrorist

Select one of the four primary categories of terrorist hazards (Chemical, Biological, Radiological/Nuclear, Explosives). Provide a history of its use as a weapon of mass destruction (WMD); describe how it is made and dis ...

Moving average forecasting modelsmoving average forecasting

Moving Average Forecasting Models Moving average forecasting models are powerful tools that help managers in making educated forecasting decisions. A moving average is mainly used to forecast short historical range data. ...

Oracle databaseusing the schema you developed in homework 1

Oracle Database Using the Schema you developed in Homework 1 for your e-Commerce project, design and implement a Virtual Private Database that limits database access. Your design should be based on two of your columns an ...

Database management assignmentyou have been hired by

Database Management Assignment You have been hired by National Bank as their new database administrator. Your first task is to upgrade the bank's outdated computer system and implement a relational database management sy ...

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 ...

Discussionnormalization and redundancy please respond to

Discussion "Normalization and Redundancy" Please respond to the following: • Suggest one of the problems that normalization seeks to solve within a database. Describe one example of your suggested problem, and explain th ...

Consider a typical sales invoice that would include the

Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this information. Next, apply normalization to re ...

  • 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