What is the error message that you would get if you try to assign “Null” to an integer variable ?
Answer : error message: cannot convert null to int…
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Chetu interview questions and answers
155 posts
DFD for E-Commerce Website
Answer : The System is recognized as a complete system “Fruit Bazaar System…
How to run PHP in command line ?
Answer : PHP is a server side scripting language, a lot of development using PHP…
How to download a php script directly in your script page ?
Answer : Here we create a PHP script, name it “download.php”…
How to find out, how a user visited a particular page ?
Answer : We add a counter in that page….
What is indexing in database ?
Answer : Indexing is the One of the ways that will optimize the database searching…
What is Normalization ?
Answer : Normalization is the process of reorganizing data in a database…
Design a database for a hierarchical data like country, state, zone, street etc., The tags and length of the hierarchy are not specific and they can change anytime ?
Answer : Hierarchical data is a common relational data pattern for representing tree-like data structures…
Lazy writer in Memory ?
Answer : Lazy write is an effect caused by the use of a write-back cache…
What is the difference between the SubQuery and Corelated SubQuery ?
Answer : The inner query is executed only once…
What is the Difference between join and union ?
Answer : The union operator combines the results of two or more queries into a single result set…
What is the difference between a HAVING CLAUSE and a WHERE CLAUSE ?
Answer : The HAVING clause sets conditions on the GROUP BY…
Difference between Clustered and Non-clustered index ?
Answer : Cluster index: Clustered index will be created…
