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Please do keep the questions/instructions and points for each question in this Word document with your answers. Answer the questions clearly, explain your answer, and show your work. Answers, even if right but without an explanation, will get no credit. The explanations need to be brief, but complete, logical, and to the point. Do not quote anybody else, use your own words. Answer in the space provided or add lines if really needed. Each question is worth 10 points! Q1: In terms of performance gains, what role does an I/O controller located inside the peripheral device perform? (50 to 100 words should be sufficient to answer this question) Q2: Consider the steps required to write a block of data from a disk to memory. Outline the major sequence of I/O events that must occur to make this possible. (There are three major steps) Q3: What is the capacity of a hard drive (in GB) consisting of 120,000 tracks, 4,000 sectors, and 4 surfaces? Assume each block has 512 bytes. Q4: Explain what is meant by wear-leveling in Flash drives?
Q5: There are two levels of scheduling. One level of scheduling determines which jobs will be admitted to the system and in what order. What does the other level of scheduling do? Q6: Why is it so important that access to system services by application program be controlled through APIs? Q7: How many 512 byte blocks are required to store a 1.6MB file? Q8: Describe the Bitmap method for maintaining free space on a disk. Q9: In servicing read and write requests for a disk, how does First-come, first-served (FCFS) scheduling work? And, why is FCFS inefficient? Q10: In a preemptive system, what is a 'time-out'?
design, organize and implement a RDBMS for Ercan Airport Management that will store, manipulate and retrieve all airport related information. The database you will design will organize the information about all the airplanes stationed and maintain..
Create a query with all fields from the student table, where the student's last name is "Smith".Create a query that includes students' first names, last names, and phone numbers.Create a query that includes instructors' first names, last names, and c..
Write a SELECT statement that joins the Categories table to the Products table and returns these columns: CategoryName, ProductName, ListPrice.
Create a database using professional principles and standards. Use a relational database software application to develop a database implementing the logical design into a physical design.
In the lookup workbook, create a table: with headers: Region, Metro, University, Employment, Enrollments 2. Build the table using direct sourcing from the appropriate tables to create this chart:
Explain the conceptual model employed in the design of these types. Describe the analogies and concepts these monitors expose to users, including the task-domain objects users manipulate on the screen.
What are some issues when working with a many-to-many relationship. Provide some examples.
Describe how you have represented weak entities, if any exist and describe how you have represented super type and subtype entities, if any exist.
you are the trainer for a major technology firm. one of the problems your firm has is hiring new technologists who have
Obtain the columns names and data types of the view USER_TABLES using the DESCRIBE command. Retrieve the names of all the tables of a user's database tables using the SELECT table_name FROM user_tables; command.
Relational Database Systems - COMP 1005 Design the logical structure of a database using Entity-Relationship diagram and Apply normalization techniques to reduce redundancy in a database.
in this project you will perform the physical design and implementation using sql data definition language ddl and
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