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Tpy6a [65]
3 years ago
6

What happens if none of the selector values match selector in a simple case expression in pl/sql

Computers and Technology
1 answer:
mixas84 [53]3 years ago
6 0

Answer:

If no values in WHERE clauses match the result of the selector in the CASE clause, the sequence of statements in the ELSE clause executes. ... When the IF THEN statement has no ELSE clause and the condition is not met, PL/SQL does nothing instead raising an error.

Explanation:

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Answer:

Option D is correct.

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Answer:

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Explanation:

1. Do some presentation preparation work:

A good presentation begins, not with slides, but with a pencil and paper. Research your audience’s background, interests and capabilities. What do they already know, for instance, and what can they learn from you?

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Visual communications expert Curtis Newbold suggests “a fascinating quote; an alarming or surprising statistic; asking your audience a question; telling a relevant and funny joke… an imaginary scenario; or a demonstration''.

3. Create sleek and stylish slides:

Once you have your story down, you can start to design your slides.  

Before you do, it’s important to think about the practicalities. Will they, for instance, be displayed Widescreen with a 16:9 ratio? Or Standard with 4:3? This might seem like a small detail, but it can make a huge difference in terms of visual impact.

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The most important thing is to grab your audience’s attention straight away – and then maintain it! You want your audience to go away having learned something. So, make it as easy as possible for people to grasp your message “from the off”!

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