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Create an update query to select all records in the tblOverPriced, decrease the Price field values by 10%, run and close the query.
I undestand that i'll be using the Update query and can generate the correct values by creating a new field and using the expression 0.9*[price] but I dont understand how to do that directly to the Price field
Write down your subquery MAX_CALC_SAL. Name columns in result JOB_TITLE and JOB_TOTAL, and sort result on JOB_TOTAL in descending order.
Assume that 30% of science students are majoring in biology. Would you consider to be novel with respect to rule? Describe. Calculate confidence and support of rule.
Find the name and membership number of members who have borrowed more than five different books of that publisher.
For each table argue whether or not interference with another transaction is possible. Illustrate concurrency control method using two phase locking.
How to interactively query a database by using SQL statements and SQL*PLUS commands and how to use spool command to save an interactive session within SQL*PLUS.
Find the average number of books borrowed per member. Take into account that if a member does not borrow any books, then that member does not appear in the borrowed relation at all.
Examine different sales transactions. Design a context diagram and a level-0 diagram that represent the selling system at the store.
Describe relationships with example. Also illustrate degree of relationship for that example. What do you mean by locks. Write dow a binary lock function.
When increasing cardinalities from 1:N to N:M, which of the given steps are included in process the order of steps listed below is not relevant, only steps themselves?
Use Cases Perform a requirements analysis for the Case Study
Its a lead a project that will implement a new learning management system for your university. You have two key tasks: Task 1: Investigate learning management software packages that are available through application service providers.
To lock any other vertex, the transaction must have visited all the parents of that vertex and must be having a lock on one of the parents of the vertex. Show that the protocol ensures serializability and deadlock freedom.
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