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1. Explain the interactions among end user, data, information, and decision making.
2.Suppose you are a DBA staff member. What data dimensions would you describe to top-level managers to obtain their support for the data administration function?
3. How and why did database management systems become the organizational data management standard? Discuss some advantages of the database approach over the file-system approach.
Write down the complete transaction using SQL.
Use the three-sphere model for systems management and brainstorm issues related to the change based on the business, technology, and organization spheres.
Consider relation schema r(A,B,C,D,E, F) and a set of functional dependencies {A BCD,BCDE,BD,DA}. Calculate canonical cover for set of functional dependencies (show each step of your derivation with an explanation).
What advantage is there in storing metadata in tables? Is Microsoft Access a DBMS? Why or why not? List the several consequences of a poorly designed database.
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.
Pick one of the different types of SQL statements (data definition language, data manipulation language, or data control language). Describe how that type of statement is use.
Create a link list in ADT c to maintain employee information like name,empid,basic salary and address.1.add employee info to the list if the empid is valid.
Draw the E/R diagrams for the business rules
What actions does a referential integrity constraint prevent from occurring when data is inserted in a table that contains this constraint?
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.
Create a database for Ray. He is interested in movies and wants to keep information on movies, actors, and directors in a database. The only user is Ray, and he needs to produce reports.
Explain the content of this document in natural language;Design the graph representation of document;
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