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1. Research and provide three to four paragraphs covering the following: What is a subquery, and what are its basic characteristics? What (if any) differences are there between the construction of a subquery in MS Access, MS SQL Server or Oracle? What is a correlated subquery? Give an example of each type.Be sure to cite your references.
2. Based on the group E-R diagram you produced last week, create a data dictionary for your group project using Microsoft Excel. Use Page 233, Table 7.3, as a reference. Attach the data dictionary to this assignment in a single Excel document.
What is the difference between the information provided by the E-R Diagram and the data dictionary? Simply put, the data dictionary contains the data types for the physical implementation that will be done with SQL. It forms the basis for the metadata that will be used when creating the tables. An E-R diagram specializes a logical graphic model and it doesn't contain any data type or data information in a database.
You must implement the entity relationship model provided in the model solution to Assignment 1. The model solution will be released on the course website approximately TWO (2) weeks after the Assignment 1 due date.
Create a report that contains the above data - be sure to include a Hampton University logo in your report.
Discuss why a relational database would be suitable for the organisation in the case study and provide three reasons for this recommendation and discuss using three advantages that a database management system provides to an organisation.
Summarize briefly how to make use of indexes such as B+ tree or a hash indexes in selection, projection, and join operations?
The assignment will be chosen by the individual student with my approval. An ideal assignment will be one which involves at least four entity sets, but not too many since there will be critical time pressure to complete the assignment.
your company has put in the request for a new database system and you have been tasked with architecting the security
describe the challenges that an organization will face when changing business processes and how information systems
The software MUST use DATA MINING TECHNIQUES (at least one like classification or association rule mining etc). The work involves analysing loads of the Hospitals data to search for the desired patterns.
Suppose you know that the following queries are the six most common queries in the workload for this corporation and that all six are roughly equivalent in frequency and importance
How would you change the current design and how does your new design address the problems you have identified with the current design.
Explain the concept of physical data independence and its importance in database systems, List four significant differences between a file-processing system and a DBMS.
Produce a scatterplot of Rent vs. Size (square meters of the apartment) for the rental data in rent.
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