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An organization has several operational systems: Customer Relationship Management (CRM) for marketing and sales, Enterprise Resource Planning (ERP), and Supply Chain Management (SCM). They also have external customer data. A wide variety of departments utilize this data: sales, marketing, procurement, human resources, R&D, and senior management.
Design a high-level conceptual view of a data warehouse using Microsoft Visio that shows the following:
Integration layers
The data warehouse
Recommended data marts.
Optimistic concurrency control sets few locks on the data in the database, lowering the isolation level that you use in an application. This allows more applications to run concurrently and potentially increases the throughput of the applications. Th..
How does Oracle process this query? That is, what does Explain Plan tell you about how the query is processed - how would you recognize that the results were not correct?
What is the key value of the 4th index record on the top level, assuming each index record points to the record with the highest key value in a block of the next level down?
Identify three potential users and design a subschema for each. Justify your design by explaining why each user needs access to that data element.
task 1 create 3 rows of data for each table ensuring that the referential integrity is valid.task 2 add the 30 rows of
Find '(2007), '(2008), and '(b), where b is the integer obtained from the last four digits of your student number.
How and why did database management systems become the organizational data management standard? Describe some advantages of database approach over file-system approach.
Develop a time sheet entry/customer account management software system using relational database software and prepare an associated report detailing the technical and learning issues encountered.
one of the needs that your client has is a database.to design a database a database planner should spend a considerable
Find pairs of sids such that the supplier with the ?rst sid charges more for some part than the supplier with the second sid.
determine the functional dependencies that exist in the following table. After determining the functional dependencies, convert this table to an equivalent collection of tables.
Consider a relation stored as a randomly ordered ?le for which the only index is an unclustered index on a ?eld called sal. If you want to retrieve all records with sal > 20, is using the index always the best alternative? Explain.
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