PlinZ

Frequently Asked Questions - Database

* What are the different types of joins?


* Explain normalization with examples.


* What cursor type do you use to retrieve multiple recordsets?


* Diffrence between a "where" clause and a "having" clause


* What is the difference between "procedure" and "function"?


* How will you copy the structure of a table without copying the data?


* How to find out the database name from SQL*PLUS command prompt?


* Tadeoffs with having indexes


* Talk about "Exception Handling" in PL/SQL?


* What is the diference between "NULL in C" and "NULL in Oracle?"


* What is Pro*C? What is OCI?


* Give some examples of Analytical functions.


* What is the difference between "translate" and "replace"?


* What is DYNAMIC SQL method 4?


* How to remove duplicate records from a table?


* What is the use of ANALYZing the tables?


* How to run SQL script from a Unix Shell?


* What is a "transaction"? Why are they necessary?


* Explain Normalizationa dn Denormalization with examples.


* When do you get contraint violtaion? What are the types of constraints?


* How to convert RAW datatype into TEXT?


* Difference - Primary Key and Aggregate Key


* How functional dependency is related to database table design?


* What is a "trigger"?


* Why can a "group by" or "order by" clause be expensive to process?


* What are "HINTS"? What is "index covering" of a query?


* What is a VIEW? How to get script for a view?


* What are the Large object types suported by Oracle?


* What is SQL*Loader?


* Difference between "VARCHAR" and "VARCHAR2" datatypes.


* What is the difference among "dropping a table", "truncating a table" and "deleting all records" from a table.


* Difference between "ORACLE" and "MICROSOFT ACCESS" databases.


* How to create a database link ?