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The discussion question
Based on your research and readings for the week, respond to the following discussion topics.
• Often, systems have only one level of security when it comes to databases. Imagine that someone is trying to add a name (which should be composed only of letters) to a database. The user mistakenly hits a number, and the system rejects the entry. Such security can be implemented at the database management system (DBMS) or the application level. Where would you apply security? Justify your choice.
• What are some alternative practices or standards of utilizing UML for the visual representation of systems? When would you use UML over other standards? When are other standards preferable?
Database and Programming Design
These following questions require to you to create entities and their relationship using the Crow's Foot notation suitably.
Create an ERD that represents the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule
How do you access the Access Options dialog box? In which section of the Access Options can you access Navigation Options? In which type of scenario would you place two criteria in different rows in the Query design grid?
List the transaction ID and total item quantity made Online. List the phone number of the members whose transactions were handled by employee with Associate in the job title.
What percentage of time will a 20 MIPS processor spend in the busy wait loop of 65-character line printer when it takes 3 m-sec to print a character and a total of 457 instructions need to be executed to print 65 character lines?
What are the responsibilities of a DBA? If we assume that the DBA is never interested in running his or her own queries, does the DBA still need to understand query optimization? Why?
Each student will create an Access 2013 database which will be used to match personal job skills learned in college courses with desired skills for job openings. Students may use their own personal course history, or create a fictional list.
What the join method is and how it works. Given the mantra, "Fewer page reads means better performance," describe how an index can improve performance. Refer to one or more figures in the textbook if that helps your description
Compare activity (quite theoretical) of the disk (in number of bytes) required for each of both relational. Write down the advantages and inconveniences of new relational scheme.
1.kate and leopold are thinking about-buying the rockwood motellocated on interstate 70. before they make up their mind
Show all the data in each of the four tables. Do not show foreign key columns. Write names and e-mail addresses for all customers who have had a stove repair that cost more than $50.
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