Database Query Exercise: Difference between revisions
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imported>Hendrik Brummermann Created page with "This articles gives you a number of task to solve based on a Stendhal Database. {{TODO|Explain how to get a Stendhal Database}} Some tasks can be solved with one single query, ..." |
imported>Hendrik Brummermann No edit summary |
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WHERE username='bob' |
WHERE username='bob' |
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</source> |
</source> |
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== Task 1: Statistics (one table queries) == |
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How many users have been online on 2011-09-11 12:00:00? |
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How many users have been online in average per hour on 2011-09-11? |
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== Task 2: Logins (two table queries) == |
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On which day and at which time has the user bob logged in last? |
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How many failed logged in attempts have there been since then? |
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Is it likely that someone else has logged into alice's account in the last 7 days? |
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If yes, what other accounts has that person logged in to? |
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== Task 3: Passwords == |
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Alice claims that someone else changed her password. Was her password changed? Was it done by someone else? |
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Someone claims to be Bob and asks via support for a password reset. Is the request valid? (Hint: You have the ip-address of the requester) |
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