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The fourth programming project involves writing a program to manage a student database. The interface to the program should be a GUI that looks similar to the following:
A combo box should allow the user to select one of the three database actions shown. The database should be implemented as a HashMap, with the ID field as the key and a student record consisting of a name and GPA as the value. The operation should be performed when the user clicks the Process Request button. If the user attempts to insert a key that is already in the database an error message should be displayed using a JOptionPane message dialog box. If the user attempts to delete or find a record that is not in the database, a message should also be displayed.
This program must consist of two classes, one for handling the database interactions and a second class that defines the student record.
prepare a 2- or 3-page paper for this assignment.pick an online database and then describe entities and attributes that
Explain a good strategy for processing each of following queries. Determine all machines at Almaden plant. Determine employee 1 machine.
mention various steps required to draw an e-r diagram. draw an e-r diagram for student information system. mention all
Draw an ER diagram for your database scenario. Design a set of 3NF tables for your database scenario.
how can you drop a table from your database that has one or more other tables referencing it with foreign keys?no words
Neatness of your diagram, please use the concepts of model, package, and sub-system well in the Visio model. Create both your diagrams under the static model from the model explorer in Visio.
Identify the Functional Dependencies in R. Be sure to maximize the number of attributes on the right hand side (RHS) and minimize the number of attributes on the left hand side (LHS) of each FD. You should exclude any trivial FDs in your answer.
A Relational schema of your database in 3NF, clearly indicating attributes, the data type of each attribute, primary and foreign keys, candidate keys, and which attributes are nullable, giving reasons. List any assumptions you need to make.
Imagine that you work for a finance industry-based organization. Your organization is looking to submit its database design documentation to an evaluation team in order to meet Sarbanes-Oxley (SOX) compliance
Draw an E-R Diagram and draw an E-R Diagram for Student Information System.
Identify three potential users and design a subschema for each. Justify your design by explaining why each user needs access to that data element.
1. explain the concept of physical data independence and its importance in database systems2. explain what problems are
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