There are different kinds of variable. The answers are below;
- If the variable value is incremented, therefore, No <u>exception </u>will occur.
- If the variable value is incremented, An <u>Overflow </u>will occur
- If the variable value is decremented no exception will occur.
<h3>What is Underflow?</h3>
Underflow is a known to be a process or exception that happens if a number calculation is too small to be shown by the CPU or memory.
what causes a overflow is the Adding to a variable when its value is at the upper end of the datatype range.
Learn more about variables from
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Answer:
For designing a database suitable for a University registrar, the following information is included which are Information about Students, Information about Departments, Information about Professors, Information about courses, Student Grades,TA's for a course, Department offering different courses.
In creating the database registrar system the following values are defined such as Entity, Attributes of entities,The relationship among entities.
Explanation:
Solution
The following requirements are for designing of database for a University registrar.
The Database Schema includes the following:
- Information about Students
- Information about Departments.
- Information about Professors.
- Information about courses.
- Student Grades.
- TA's for a course.
- Department offering different courses.
Now,
For the design of Database for Registrar System we need to define the following:
(1)Entity: Student, Course, Instructor, Course offering.
(2) Attributes of Entities:
- Student entity has Sid, name, program as its attributes
- Course has Course_n, title, credits, and syllabus as its attributes
- Instructor has iid ,name ,dept, title as its attributes
- Course offering has section_no ,time, room, year,semester as its attributes
(3) Relationship among various entities:
- Enrolls
- Teaches
- © is offered
Note: kindly find an attached copy of the E-R Diagram for University Registrar below, and his diagram shows student entity enrolls various courses which can be having teaches relationship with instructor. Course is being offered by relationship is offered by course offering.
Answer:
Field. In Access, columns are referred to as fields. When you organize your data by entering it into different fields, you are organizing it by type.
Answer: False
Explanation:
Unguided medium employs an antenna for transmitting through air or vacuum.
For guided mediums the transmission is in the form of twisted copper wires, shielded twisted copper wire and optical fibres. They henceforth do not depend upon antennas for transmission through air using antennas.
Answer:
mkdir homeworks // make a new directory called homeworks.
touch homework_instructions.txt //create a file called homework_instruction
sudo -i // login as root user with password.
chmod u+rwx homework_instructions.txt // allow user access all permissions
chmod go-wx homework_instructions.txt // remove write and execute permissions for group and others if present
chmod go+r homework_instructions.txt // adds read permission to group and others if absent.
grep POINTS homework_instructions.txt | ls -n
Explanation:
The Linux commands above first create a directory and create and save the homework_instructions.txt file in it. The sudo or su command is used to login as a root user to the system to access administrative privileges.
The user permission is configured to read, write and execute the text file while the group and others are only configured to read the file.
