Tell about technologies that we use in DHTML?
Some technologies that we used in DHTMl are given below:
2.HTML DOM: It is an Document Object Model which is an W3C Standard for HTML.Using HTML DOM is used to define standard to set of objects and to access and manipulate them for HTML.Using HTML DOM, DHTML can access and manipulate HTML elements.
3.HTML Events: It is an part of HTML DOM and used to handle HTML elements.We use DHTML with HTML Events to make web pages those perform action when event occour.
4.CSS: It is an W3C standard style and layout model made only for HTML.
What is DHTML?
Defination of DHTML according to W3c(World Wide Web Consortium) is:
"Dynamic HTML is a term used by some vendors to describe the combination of HTML, style sheets and scripts that allows documents to be animated."
We use DHTML to make the web pages dynamic and interactive.
How you define HTML DOM?
HTML DOM is an Document Object Model for HTML. HTML DOM is an standard set of objects and way to access and manipulate HTML document.Using HTML DOM we can view whole HTML document as tree structure.Using this DOM tree we can access and manipulate all elements with their text and attributes.
Some important points about HTML DOM are given below:
1.It is an standard object model and standard programming interface for HTML.
2.HTML DOM is an plateform and language dependant.
3.It is an W3C standard to get,change,add or delete HTML element.Reply
I Have a table in which there is a chance of duplicate rows. Can you please tell me how to eliminate the dup;licate records?
Use primary key If column is like Id or no..Alternate way is you can apply unique constraint on column.. hope u hv cleared ur doubts
In what sequence SQL statement are processed?
The sequence of SQL statement are processed in the following sequence (DB2):
> FROM clause
> WHERE clause
> GROUP BY clause
> HAVING clause
> SELECT clause
> ORDER BY clause
> FETCH FIRST clause
What databases do you know?
Yes we know lots of Databases, we are mentioned there :
What does COMMIT do?
Its manly work is Saving all changes made by DML statements.Reply
What do you mean by Serialized?
It is the part of the isolation level , Its bassically use for the Data read by the current transaction cannot be changed by another transaction until the current transaction finishes. No new data can be inserted that would affect the current transaction.Reply