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Question: Use a co-related sub-query to return one row per customer, representing the customer's oldest order (the one with the earliest date).
Each row should add these three columns: EmailAddress, OrderID, and OrderDate.
You need to implement this query and provide the output.
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.
Create a stored procedure that updates the members' balance in the membership table by correctly recording the current or outstanding balance for each customer.
1. the appropriate sql statements for each query which should be copied from your sql code in mysql and pasted into
ray henry is considering expanding the inventory at his book stores to include movies. he has some special ideas for
Discuss the requirements needed to build a database for the scheduling process.
Prepare a report - The report should be related to Business communications.
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.
Design an entity-relationship model of the problem, convert the model into a relational model, and assess the normal form of each schema.
XML is one of the base technologies around which many other technologies are developing. Describe an application used at work (or online) that is based on XML and discuss the advantages and disadvantages of XML in this application.
What is the role of a DBMS, and what are it advantages? What are its disadvantages?
Your job is to create a database management system for bike shop who ‘buys' and ‘sells' new and second-hand bikes, and also parts of bike. Bike is constructed with parts while part can be fitted to different bikes.
University XYZ needs a database that keeps track of students, what classes they taken and the grades for each of the classes.
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