Imagine a simple database storing information for students' grades. Design what this database might look like and provide a SQL query to return a list of the honor roll students (top 10%), sorted by their grade point average.
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- Imagine a straightforward database that contains data on student grades.Provide a SQL query that will return a list of the honour roll students (the top 10%), sorted by their grade point average, and design how this database might look.Consider a basic database that stores information about students' grades. Create a database and offer a SQL query that returns a list of honour roll students (top 10%), ordered by grade point average.Imagine a database that stores records of what students are enrolled in what class, and what teachers are teaching those class. Just in words, Give an example of one to one relationship in the context of a student class database.
- Consider a straightforward database that contains data about a student's grades. Provide a SQL query that will return a list of the honour roll students (the top 10%), ordered by their grade point average, and design how this database may appear.Imagine a database management system, such as the one used by an airline, that makes use of snapshot isolation. For instance, in order to get more favourable results over the long run, the airline can decide to go with a nonserializable execution.Suppose we have a relational database with five tables. table key Attributes S(sid, A) Sid T(tid, B) Tid U(uid, C) Uid R(sid, tid, D) sid, tid Q(tid, uid, E) tid, uid Here R implements a many-to-many relationship between the entities implemented with tables S and T, and Q implements a many-to-many relationship between the entities implemented with tables T and U. A. Write an SQL query that returns all records of the form sid, uid where sid is the key of an S- record and uid is the key of a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. B. Write an SQL query that returns records of the form A, C where the A-value is from an S- record and the C-value is from a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. C. Could one of your queries from parts (a) and (b) return more records than the other? If so, which one? Justify your answer. D.…
- Suppose we have a relational database with five tables. table key Attributes S(sid, A) Sid T(tid, B) Tid U(uid, C) Uid R(sid, tid, D) sid, tid Q(tid, uid, E) tid, uid Here R implements a many-to-many relationship between the entities implemented with tables S and T, and Q implements a many-to-many relationship between the entities implemented with tables T and U. A. Write an SQL query that returns all records of the form sid, uid where sid is the key of an Srecord and uid is the key of a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. B. Write an SQL query that returns records of the form A, C where the A-value is from an Srecord and the C-value is from a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. C. Could one of your queries from parts (a) and (b) return…In a distributed database system, experiment with all of the numerous ways that individuals could request data.Consider all of the numerous methods you could need to get data in a distributed database system.
- Suppose you are asked to design a club database system based on the following information. Each student has a unique student id, a name, and an email; each club has a unique club id, a name, a contact telephone number, and has exactly one student as its president. Each student can serve as a president in at most one of the clubs, although he/she can be the members of several clubs. Clubs organize activities and students can participate in any of them. Each activity is described by a unique activity id, a place, a date, a time and those clubs that organize it. If an activity is organized by more than one club, different clubs might contribute different activity fees.QuestionDraw an E-R diagram for the system according to the above description.What makes Database unique as a programming language? Give me an illustration, please, since I don't get it without one.As illustrated, a relational database can't have these connections.