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Recent questions tagged database

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asked sara Guru 24.6k points 29 52 81
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asked john Guru 27.1k points 31 50 97
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When and Why does some one decide that they need to create a View in their database? Why not just run a normal stored procedure or select?
asked anonymous
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1 answer 94 views
What's the Hi/Lo algorithm? I dont know anything about this and how it works.I am curious to know about this? Can you tell me? Thanks in Advance
asked anonymous
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1 answer 44 views
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SQLite is a single-file based database and MySQL is a normal database. but I'm not sure which is faster where or better for what...what are the pros and cons of each option?
asked arnav Sr Member 1.3k points 9 21 28
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1 answer 56 views
asked om Sr Member 1.3k points 7 16 31
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Is email address a bad candidate for primary when compared to auto incrementing numbers. Our web application needs the email address to be unique in the system. So, I thought of using email address as primary key. But, my friend suggests that string comparison will be slower to integer comparison. Is it a valid reason to not use email ids as primary key?
asked om Sr Member 1.3k points 7 16 31
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1 answer 93 views
What is a tuple?
asked anonymous
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1 answer 405 views
What are triggers? How to invoke a trigger on demand?
asked anonymous
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1 answer 338 views
What are cursors? its types and What are the disadvantages of cursors?
asked anonymous
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1 answer 431 views
What is the difference between dropping, truncating and deleting from a table.
asked anonymous
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1 answer 50 views
What is GROUP BY?
asked anonymous
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1 answer 136 views
What is a self join and give an example.
asked anonymous
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1 answer 29 views
When do you use a LIKE statement?
asked anonymous
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2 answers 1.2K views
What are the wildcard characters?
asked anonymous
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1 answer 205 views
What is ROWID in database?
asked anonymous
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1 answer 260 views
What are database files, control files and log files. How many of these files should a database have at least? Why?
asked allison Sr Member 1.5k points 11 26 40
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