Softwaretesting-QuestionsandAnswers-SQLInterviewQuestions Q.WhatdoesSQLstandfor? A.StructuredQueryLanguage Q.Whatisaprimarykey? A.Primarykey:EachrowofthedatainatableuniquelyidentifiedbyaPrimaryKey Thecolumn(columns)thathascompletelyuniquedatathroughoutthetableis ...
16.What is difference between simple view and snapshot?(Mostly asked Interview Questions For SQL) Answer: View Materialized Views(Snapshots) 1.View is nothing but the logical structure of the table which will retrieve data from 1 or more table. 1.Materialized views(Snapshots) are also logical ...
SQL Job Interview Questions and Answers 1 :: What is SQL (Structured Query Language)? SQL is an English like language consisting of commands to store, retrieve, maintain & regulate access to your database.Read More 2 :: What is the SQL*Plus? SQL*Plus is an application that recognizes &...
To find and resolve these issues we can use “Replication Monitor”, “DBCC Commands”, “SQL Profiler”, “System Tables / SP / Function”. If incase we can’t resolve just by providing a simple solution we have to shrink the transaction log file. Below are two methods. To shrink the ...
Advanced PL/SQL Interview Questions Let's now explore some advanced interview questions in case you are applying for a more senior role that requires more experience. 10. What are the methods of optimizing performance in PL/SQL? Minimizing context switches between SQL and PL/SQL is crucial for...
The hard part of these SQL interview questions is that they are abstract. The tasks say to “imagine the data sets” and show only a few lines of them. When you get an exercise like that, it helps a lot if you have seen similar datasets and solved similar problems before. I hope sol...
ANSI-standard SQL specifies five types of JOIN clauses as follows: INNER JOIN (a.k.a. “simple join”): Returns all rows for which there is at least one match in BOTH tables. This is the default type of join if no specific JOIN type is specified. LEFT JOIN (or LEFT OUTER JOIN):...
A simple view can be thought of as a subset of a table. It can be used for retrieving data, as well as updating or deleting rows. Rows updated or deleted in the view are updated or deleted in the table the view was created with. It should also be noted that as data in the origin...
4. I have an instance on which there are databases in both FULL and SIMPLE recovery models. If I restart the sql service, what is the difference between these databases in recovering or what happens while restarting the services? 5. I have a log file which is of 250 GB. Log is full....
• ONF: Optimal Normal Form is a model limited to only simple elemental facts, as expressed in Object Role Model notation• DKNF: Domain-Key Normal Form is a model free from all modification anomalies is said to be in DKNFDay02) What is a stored procedure? Code that can be save ...