What is the maximum allowable length of MySQL datatype VARCHAR?

What is the precision limit for MySQL datatype DOUBLE?

Which can be used to implement data validation while creating a table in MySql?

'Perfect Services' provides financial services worldwide. You want to display data from the table pers for joining_date from #1/1/2005# to #31/12/2005# and the job should either be of an analyst, a clerk or a salesman. Which is correct?

Refer to the following declarations of the php variables: $company = 'ABS Ltd'; $$company = ', Sydney'; ?> Which is not a correct way of printing 'ABS Ltd , Sydney'?

Which special variables of a shell script holds the number of arguments passed onto the script?

Read the following code snippet: 1. for filename in *; do 2. if [ -f $filename ]; then 3. ls -l $filename 4. file $filename 5. else 6. echo $filename is not a regular file. 7. fi 8. done What does '-f' in line 2 mean?

During heavy INSERT, UPDATE, and DELETE activity, indexes slow down the performance. Which setting controls this behavior?

Which is correct for specifying the default value?

You have an HTML file called mypage.html and you want to store meta headers of this html page. Which directives specifies the filename extension for metainformation files?