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Understanding Concurrent Database Access: Implications and Best Practices

Learn the significance of multiple users accessing a database simultaneously on the same system or network. Discover how to handle queries efficiently and explore sorting options for effective data management.

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Understanding Concurrent Database Access: Implications and Best Practices

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Presentation Transcript

  1. CS 101 Attendance 3/19/12

  2. What does it mean for two users to access a database concurrently? • They are on the same computer • They are using the same DBMS at the same time • They are reading from the same database file across a network • It's impossible

  3. If you wanted to ask the query, "who are the customers from Kentucky OR Virginia?" • You must ask for one state at a time • You put the criteria on the same line of the query • You put the criteria on different lines • Either 2 or 3 will work

  4. Enter question text... • This is sorted by Size within Color • This is sorted by Color within Size • It could be either

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