What is a self join? Explain it with an example?

Answer Posted / mangi

answer 1 is wrong

Is This Answer Correct ?    39 Yes 16 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Any sample or model question of punjab national bank for deputy manger IT or any sample of PNB.any1 plz do send on

1813


fact table and dimension table containg one to many relationship or many to one relastionship

2069


To convert IDMS to DB2, how to deal with IDMS occurs and redefined clause?

3417


When installing the datastage7.5x2 edtion iam getting aproblem i.e the cpu count is 2 but the cpu count in installation is one . how can i install in my p.c (system is dual core).

1776


Explain the rollup operator?

600






What is database design and development?

597


What is the physical representation for a many-to-many relationship?

567


What are the types of database model?

529


How can you fix a poorly performing query?

614


What is an application role and explain a scenario when you would use one?

544


Explain about relational database management systems?

556


What is the maximum length of an extended property?

546


A) Which two are benefits of Teradata's support for ANSI Standard SQL? (Choose two.) 1.data is distributed automatically 2.queries get optimized to better plans 3.submit queries from other database systems 4.can interface with BI tools B) Which statement is true when comparing the advantages of third normal form to star schema? 1.Star schema tends to have fewer entities. 2.Star schema requires additional data storage. 3.Third normal form tends to have fewer entities. 4.Third normal form requires additional data storage. C)Which two sets of functions does the Parsing Engine (PE) perform? (Select two.) 1.sorting, formatting, and aggregating of the final answer set 2.flow control of the data to and from the participating tables 3.SQL statement interpretation, syntax validation, and semantic evaluation 4.dispatching the step execution sequence to the AMP via the BYNET D) Which two can be achieved with Teradata Active System Management (TASM)? (Choose two.) 1.disable hardware 2.react to hardware failure 3.influence response times 4.collect metadata E) Which three mechanisms can be used to ensure security within the Teradata Database? (Choose three.) 1.views 2.spool limits 3.roles 4.access rights 5.profiles

6013


If a column is an image value type, how you can compare column values? How can you use this column in join clause?

579


Which four data types cannot be used as a return type from a user-defined function?

573