Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

What are the three types of anomalies in database and
Explain?

Answer Posted / safiullah

there are three type of anomaly
1)insertion anomaly
2)deletion anomaly
3)modification anomaly
INSERTION ANOMALY occur when certain attribute cannot be inserted into the database without the presence of other attribute.
DELETION ANOMALY exist when certain attributes are lost because of the deletion of other attribute.
ANOMALY's MODIFICATION occur when we are not able to modifying the record in database without takecare of other facts.

Is This Answer Correct ?    5 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is ole db used for?

1065


What is ase database?

1058


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.

2604


What is the purpose of firebase?

1030


What do you mean by database?

1149


What are the types of indexes that are present inside a database?

1167


Source File: Target EMPNO, SAL Empno, Format 101, 1000 101, 1000 101, 1100 101, 1000, 1100 101, 1000 101, 1000, 1100, 1000 101, 10000 101, 1000, 1100, 1000, 10000 102, 1100 102, 1100 102, 1300 102, 1100, 1300 102, 1200 102, 1100, 1300, 1200 102, 1500 102, 1100, 1300, 1200, 1500 How can i get that output using datastage(ETL) tool

1901


How do database connections work?

991


What is the database url?

1151


issues involved in modeling and building data werahouses

2003


How default key is different from primary key?

1080


What does new grouping sets enables you to do?

1087


Please post the scenerois for writing the complex sql queries , for my practice.Can be any query if you cannot solve.

2588


What is odm database?

1077


There are three servers are run by Oracle, MS Access and .Net. What are the procedure fetching the values of two variables from two servers among these?

2209