Answer / akoman

D) EXPLAIN

Answer / raj kumar

Explain

explain will give the optimizer plan for the query

explain select * from .......etc

characters of DBMS A) non redundant B) data independence C) increased security D) all the above

1 Answers   Accenture, XP,

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what is meant by Dynamic query?

3 Answers   Satyam,

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What is a super key?

0 Answers   3i Infotech,

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What is a database example?

0 Answers  

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What is database bounce?

0 Answers  

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what is cardinality

3 Answers   CSC,

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Given a table of Player which contains Sno and player name, write a query which finds all possible Table Tennis doubles pairings.

0 Answers   Amazon,

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How to do Data size testing? Who does this testing (Developer or tester)?

0 Answers  

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Is it good to store images in database?

0 Answers  

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london school of science and technology has a software development unit,known as lsst solutions,which is responsible for developing and implementing software throughout the collegejames tristan keeps a record of all student details in the college including student id,name,and start date and phone number.There are many courses offered by LSST. For example MBA, MSc, BSc, BABS, DF, English etc. Each course id identified by course id, description, duration. Each course has many semesters. Each semester takes place during a particular term. Semester details and term details are required to be stored in the database. Each course has many subjects and same subject may be offered in many courses. For each subject many details such as Subject code, name, result and attendance are required to be stored. Every subject has mainly two assessments; one assignment and one exam. Assignment is worth of 30% and exam 70% respectively. You have been appointed as a database designer. Your job is to provide ERD with all possible entities and relationships. Note: Feel free to make necessary assumptions 3: Assignment Tasks. 1. Create an ERD for the above problem 2. Translate the ERD to Relational Data model (RDM) 3. Implement the RDM by creating the tables 4. Populate the database with your own data. 5. SQL Queries for the following tasks a. List all student details in each course along with course details b. Count and display number of students in each course. c. List student name, course name, assessment description, marks for all students.

0 Answers  

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Under which circumstance should you create an index on a table?

0 Answers   3i Infotech,

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What is the use of graph database?

0 Answers  

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