1

If we are to use equivalent partitioning technique, which one of the following answers is the most efficient to test against SQL injection?

  1. bbbbb,12345,'
  2. %, ', @, abn123
  3. ', ab123
  4. '
2

The answer is 3.

bbbbb,12345,'

This answer is correct, but from equivalent partitioning point of view, it offers two valid inputs, bbbbb and 12345, from valid input partitioning.

%, ', @, abn123

This answer has three valid inputs from valid input partitioning.

', 123

This answer has one valid input and one escape character.

'

This answer has only got one escape character, no valid input at all.

Please bear in mind, ISTQB exam does not cover everything, letting alone SQL injection techniques. I suggest you spend some time studying SQL injection, there is a good link here. SQL Injection OWASP

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