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Describe the responsibilities of the DBA and the database designer ?
The responsibilities of DBA and database designer are:1. Planning for the database's future storage needs2. Describing database availability and fault management architecture3. Defining and forming environments for development and latest release installation4. Creating physical database storage structures after developers have designed an application5. Constructing the database6. Determining and setting the physical and size locations of data files7. Evaluating latest hardware and software purchase8. Researching, testing, and recommending tools for Oracle development, database administration, modeling, and backup and recovery implementation, as well as planning for the future9. Giving database design and implementation 10.Understanding and employing the optimal flexible architecture to ease administration, permit flexibility within managing I/O, and to increase the capability to scale the system
Types of Locks There are two necessary types of locks: Binary lock : This locking mechanism has two states for to a data item: locked or unlocked Multiple-mode loc
Question 1 Explain the 10 reasons to use MySQL Question 2 Write the SQL statements to demonstrate the following using SELECT command Expression Evaluation ORDER BY
What are the objectives of query processing? Ans: The objectives of query processing is to transform a query written in a high level language into a accurate and efficien
Describe the storage structure of indexed sequential files and their access method. Ans: Index offers a lookup capability to rapidly reach the vicinity of the desired record.
CAR SALE (Car_id, Option_type, Option_listprice, Sale_date, Option_discountedprice) This relation refers to options installed in cars (e.g., cruise control) that were sold at a de
Question 1 What are the advantages of DBMS approach in managing data? Question 2 What are the services provided by a database system Question 3 List and briefly describe
Given the following set of functional dependencies {cf→ bg, g → d, cdg → f, b → de, d → c} defined on R(b,c,d,e,f,g) a. Is cf→ e implied by the FDs? b. Is dg a superkey?
Q.1 Briefly discuss the different layers of ANSI SPARC architecture. Ans: The three layers of ANSI SPARC architecture are like this: 1. Internal view is at the lowest leve
Normalize the following tables upto and including the 3NF. Submit a 1 page printout of only the final set of normalized tables in Data Architect. Just use Data Architect to do the
explain thee diffrent types of data models
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