A student database may include indexes on fields such as major, age, marital status, and home zip code in addition to the main key, which is the student's unique identifier (all secondary keys). Let's assume the school wants a list of MIS or CS majors over the age of 25 who are married and from the 45462 zip code OR a list of CS majors under the age of 25 who are single and from the 45462 the code. Is there a way to utilize indexes to restrict access to just the records that meet this criterion?
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- An insurance company needs to store their salespeople’s information who are selling their insurance policies. They already have a database with multiple tables, one of the tables (Salesperson) stores information about each salesperson along with the bonus percent they receive, based on the city where the insurance is sold. The table has the following fields: Salesperson(spID, spName, spBirthDate,spCitySelling, bonusPercent) spID: Unique identification number of the salesperson. spName: Full name of the salesperson. spBirthDate: Birthdate of the salesperson. spCitySelling: The city in which the salesperson is selling the insurance. bonusPercent: The bonus percent received by the salesperson based on the city in which he/she sells the insurance. Each salesperson can sell the insurance in just one city. However, for a city, there can be more than one salesperson appointed. Also, the bonus percent is fixed for each city. For example, all of the salespeople who sells insurance in…Consider a MOVIE database in which data is recorded about the movie industry. The data requirements are summarized as follows: Each movie is identified by title and year of release. Each movie has a length in minutes. Each has a production company, and each is classified under one or more genres (such as horror, action, drama, and so forth). Each movie has one or more directors and one or more actors appear in it. Each movie also has a plot outline. Finally, each movie has zero or more quotable quotes, each of which is spoken by a particular actor appearing in the movie. Actors are identified by name and date of birth and appear in one or more movies. Each actor has a role in the movie. Directors are also identified by name and date of birth and direct one or more movies. It is possible for a director to act in a movie (including one that he or she may also direct). Production companies are identified by name and each has an address. A production company produces one or more…Suppose you are given the following requirements for a simple database for the Indian Premier League (IPL): a. the IPL has many teams, b. each team has a name, a city, a coach, a captain, and a set of players, c. each player belongs to only one team, d. each player has a name, a position (batting order), a skill level (such as batsman, bowler, AL rounder), and a set of injury records,e. a team captain is also a player, Construct a clean and concise ER diagram for the IPL database.
- Suppose we have a database for an university. The requirements are as follows: • Professors have an SSN, a name, an age, a rank, and a research specialty. • Projects have a project number, a sponsor name (e.g., NSF), a starting date, an ending date, and a budget. • Graduate students have an SSN, a name, an age, and a degree program (e.g., M.S. or Ph.D.). • Each project is managed by one professor (known as the project’s principal investigator). • Each project is worked on by one or more professors (known as the project’s co-investigators). • Professors can manage and/or work on multiple projects. • Each project is worked on by one or more graduate students (known as the project’s research assistants). • When graduate students work on a project, a professor must supervise their work on the project. Graduate students can work on multiple projects, in which case they will have a (potentially different) supervisor for each one. The FDs for the above requirements are given as, • PSSN →…Think about a student database with the StudentID as the main key and the Major, Age, MaritalStatus, and HomeZipCode indexes (all secondary keys). If the institution requested a list of MIS or computer science majors who were over 25, married, and from the 45462 zip code OR computer engineering majors who were single and from the 45462 zip code, then let's pretend they were both over 25 and from the 45462 postcode. How can indexes be used to guarantee that only the data that satisfies this criteria is accessible to users?Your task is to develop a database, in order to keep information on all sales at a motorcycle dealership. The database will include information on motorcycles, salespeople, sales, and customers. We assume for simplicity that the dealership sells only new motorcycles and that all motorcycles are produced by the same manufacturer. Each kind of motorcycle is called a model, and it has a unique model number. For each model, you want to store also its name, engine size in cubic centimeters (cc) which is an integer number, and the date when this particular model was introduced. For each salesperson, you want to store their employee ID number, first name, middle initial, last name, and the date when the employee was hired. For each customer, you want to store a customer ID number, first name, middle initial, last name, address information (city, state, and zipcode), phone number (given in standard US format), and e‐mail address. Assume that you do not have a zip code table available. Each…
- The database keeps track of three types of persons: employees, alumni, and students. A person can belong to one, two, or all three of these types. Each person has a name, SSN, sex, address, and birth date.Every employee has a salary, and there are three types of employees: faculty, staff, and student assistants. Each employee belongs to exactly one of these types. For eachalumnus, a record of the degree or degrees that he or she earned at the university is kept, including the name of the degree, the year granted, and the major department. Each student has a major department.Each faculty has a rank, whereas each staff member has a staff position. Studentassistants are classified further as either research assistants or teaching assistants, andthe percent of time that they work is recorded in the database. Research assistants have their research project stored, whereas teaching assistants have the current course they work on.Students are further classified as either graduate or…The database keeps track of three types of persons: employees, alumni, and students. A person can belong to one, two, or all three of these types. Each person has a name, SSN, sex, address, and birth date.Every employee has a salary, and there are three types of employees: faculty, staff, and student assistants. Each employee belongs to exactly one of these types. For eachalumnus, a record of the degree or degrees that he or she earned at the university is kept, including the name of the degree, the year granted, and the major department. Each student has a major department.Each faculty has a rank, whereas each staff member has a staff position. Studentassistants are classified further as either research assistants or teaching assistants, andthe percent of time that they work is recorded in the database. Research assistants have their research project stored, whereas teaching assistants have the current course they work on.Students are further classified as either graduate or…A city college would like to maintain their academic information in a MySql database system. The following are the interested information: Courses: Catalog # (CIT 170 for instance) Credit Hours; Name of the Course (Database Design Fundamentals for instance) Course Descriptions Prerequisite Components (Lecture, or Laboratory for instance) Classes: Class # Class Name (usually the course name, CIT 170 for instance) Start Date End Date Meeting time (9:30 am ~ 12:15 pm, for instance) Days in a week (Monday) Term (Spring 2018, for instance) Location (TIE Building for instance) Room (UB 301, for instance) Instructor Online status (online, or in-person) Faculty: Employee Id (001880301, for instance) First Name Last Name Title (professor, for instance) Email Phone Office Location (TIE building, for instance) Room (UB303, for instance) Student: Student ID First Name Last Name Plan Sub Plan Advisor Current GPA Grade of each course The Term you got the grade for a course. The class number…
- The database keeps track of three types of persons: employees, alumni, and students. A person can belong to one, two, or all three of these types. Each person has a name, SSN, sex, address, and birth date.Every employee has a salary, and there are three types of employees: faculty, staff, and student assistants. Each employee belongs to exactly one of these types. For eachalumnus, a record of the degree or degrees that he or she earned at the university is kept, including the name of the degree, the year granted, and the major department. Each student has a major department.Each faculty has a rank, whereas each staff member has a staff position. Studentassistants are classified further as either research assistants or teaching assistants, andthe percent of time that they work is recorded in the database. Research assistants have their research project stored, whereas teaching assistants have the current course they work on.Students are further classified as either graduate or…You are asked to design a database for an University. This particular university has multiple departments. Each department in that university offers one or more courses to the students. All the students are part of a certain department and they take courses in that department. A department has a name, unique number and chairman. The courses have a name, a course number such as ‘311’ , a credit point value, and the year it commenced. A course cannot be identified uniquely with the course number, but the course number is unique for each department. Students have given names, surname, unique Student ID, Date of Birth and the year they enrolled. When a student takes a course the year and the semester he or she took that particular course is recorded. When he finishes the course , the grade and total marks are recorded. A student can take multiple courses but they are also allowed to drop a semester in that university by taking no courses. Construct an ER diagram using the requirements…A hospital would like to set up a database recording which registered nurse looked after which patient etc. Each registered nurse has a unique nurse ID, and each patient has a unique patient ID, and the following attributes are found for nurses, and patients in the first round of design: NURSE: nurselD, suname, first name, birthdate, dept-code, sex, salary-level PATIENT: patientlD, surname, first name, birthdate, wardlD, sex, admission_date, discharge_date A recent duty list shows the patients that were cared by each nurse in past 2 months, see below for some samples: