In a table Student(Roll No, Name, Age). If Roll No. is a candidate key then print all posible super keys.

Q: 10. When we find out that there are some miss spellings in the query?

A: Given: Where did we discover certain misspellings in the SQL query?

Q: According to the data shown in the table, which of the following could be candidate keys of the…

A: Candidate key is the set of attributes which can refer each row uniquely in table

Q: The maximum possible number of candidate keys for given 10 distinct attributes are

A: Introduction :Given , 10 Distinct attribute,We have to calculate max. number of possible candidate…

Q: Write SQL query for following: Fetch the details of all Juices which have price less than 30 from…

A: Given: Juice(Name, Price, Rating) Requirement-Fetch the details of all Juices which have price less…

Q: Given a relation S(student, subject, marks), write a query to find the top 10 students by total…

A: Given:   Given a relation S(student, subject, marks), write a query to find the top 10 students…

Q: Explain Disallow null keys in fact tables?

A: In data warehousing there are two types of tables are used: Fact Table Dimension Table Fact Table:…

Q: Consider the below-given tables to develop an SQL query to remove duplicates from a table without…

A: Using Group By and Having clause- DELETE FROM EmployeeSalary WHERE EmpId IN ( SELECT EmpId FROM…

Q: Implement the following clauses on a database of your choice and produce results. (Write query and…

A: The BETWEEN operator is used to select the values of the queries within a given range. The JOIN rule…

Q: A table in third normal form is one which: A Has only one primary key. B Is linked to another table…

A: A table is in 3NF (third normal form) if the table is in 2NF and there is no transitive dependency…

Q: Does a foreign key have to refrence all the primary key fields of another

A: Primary key is an attribute or group of which uniquely identifies each row of the table.  Foreign…

Q: What is the definition of the Candidate key?

A: Candidate key: A row in a relational database is identified by one or more columns (fields) that are…

Q: How the unicity distance helps removing Spurious keys? What is the significance of the unicity…

A: Unicity distance is the length of the original cipher text which is needed to break the cipher by…

Q: This is supposed to return one Cartesian table right? What does the a and b represent here since…

A: Given SQL statement is, Select * from Employee As a, Employee As b; Here Employee is name of the…

Q: How do surrogate keys obtain their values?

A: Surrogate keys area unit typically utilized by operational systems to spot the business object.…

Q: For each of the following statements, show whether the statement is correctly executed or not…

A: Keys: In a relational database, keys are extremely important. It is used to uniquely identify any…

Q: after revisiting the last table, which taks should we assign to John?

A: we solve the question here line by line with simple explanation:

Q: is it true that a foreign key is a column in one table that contains the primary key value of…

A: According to the information given:- We have to verify the mentioned statement is true or not.

Q: Closely examine the following tables and use it to answer the questions that follow: department…

A: ER diagram is the diagrammatic representation of tables and its attributes and the relationship…

Q: Three columns and 20 rows make up 'game1' and 15 rows make up 'game2' in this example. Both tables…

A: Degree and Cardinality: The number of characteristics or columns in a connection is referred to as…

Q: Using an implicit cursor, write an anonymous block that will add 25% to the salaries of all…

A: DECLARE sum NUMBER := 0; a NUMBER; BEGIN FOR i in 1 .. 5 LOOP a:=&a;…

Q: The following SQL query deletes all drivers in an accident that were not injured (Note that a value…

A: The correct answer is False

Q: (check all that apply) Under what conditions, the 3rd normal form is automatically satisfied if…

A: Third Normal FormThird normal form is a normal form used for normalizing a database design for…

Q: Write SQL query to get Class of student Jenny in the table Students(Name, Class, Section).

A: Given : Table- Students(Name, Class, Section) Requirement-  SQL query to get Class of student Jenny.…

Q: How many rows are returned in a Cartesian join between one table having 5 records and a second table…

A: Cartesian Join: In relational databases, the Cartesian Join between two tables refers to as the join…

Q: d Karachi 20,000 01 02 Sanaullah Peshawar 30,000 02 03 Imran

A: Consider you have the following 2 tables. Employee_Table Employee_ID Employee_Name Address Salary in…

Q: For all the employees supervised by KING, give them a salary increase, which is equal to the 2% of…

A: This can be done by changing the salary value in all columns where the MGR id is 7839. script in…

Q: A table in third normal form is one which: A Has only one primary key. B Is linked to another table…

A: A  database is in third normal form if it: is already in second normal form it has no non-key…

Q: Write a SQL statement to compute the average of Finals by grouping the department and arranging in…

A: Answer :for average we use AVG() method of sql and for grouping departments we use Group By and for…

Q: What is candidate key?

A: All the attributes used to determine the tuple (row) in a table is a candidate key. A super key…

Q: Use TRY and Catch block and add one record in dependents table on the SQL server?

A: TRY and CATCH block on SQL server to add one record

Q: Write an SQL statement to display the OwnerLastName, OwnerFirstName,PetName, PetType, PetBreed, and…

A: Create tables and insert data into those Use joins to get data from different tables.  CREATE TABLE…

Q: Would you be able to tell the difference between a composite main key and one that has a candidate…

A: Key: A key is an attribute or combination of characteristics that enable us to identify a tuple in a…

Q: By using oracle Sequence, you can generate a numeric value that can be assigned to any column in any…

A: I have given an answer in step 2.

Q: A foreign key is the candidate key that is selected to identify tuples. True or False.

A: Solution: A foreign key is the candidate key that is selected to identify tuples. True or False.

Q: For a table to be in the third normal form (3NF), each non-primary key column in the table must…

A: 3rd normal form condition:- Must follow 2nd normal form. Must not contain transitive dependency.

Q: 1st Normal Form (1NF) Consider the Students table, with the primary key underlined, and the…

A: First Normal Form (1NF): =>    If a table includes a composite or multi-valued attribute, it…

Q: Can you give example about composite key and alternate key ?

A: Introduction   Can you give example about composite key and alternate key ?

Q: A table called "game1" contains three columns and twenty rows, but "game2 has the same column as…

A: Tip It is a list of data linked together and stored in a database in the form of a table.As in…

Q: Q 5. Table X is given below with attributes (A, B, C, D, E). Find out set of super keys, candidate…

A: Primary key are attribute or set of attribute which is unique.  The set of primary keys are (A, B)…

Q: Composite datatypes can only have multi row &multi column values in them Answers: Yes No

A: Solution:   Correct Answer is : Yes

Q: Using an implicit cursor, write an anonymous block that will add 25% to the salaries of all…

A: Code: DECLARE total_rows number(2);BEGIN UPDATE Employee SET salary = salary + (0.25*salary)WHERE…

Q: We have a invoice table in the next page. Convert it to a data in key value database.

A: Note: As per Bartleby  guideline i have solve only one question (only 1) at a time so please repost…

Q: Write SQL query to fetch the list of all fruit names that are available in the table:  Fruits (FID,…

A: Given: Table Fruits (FID, FName, Available (Yes/No) Requirement- Write SQL query to get the fruit…

Q: A table called "game1" contains three columns and twenty rows, but "game2" has the same column as…

A: A table is a collection of related data recorded in a table format in a database.  In relational and…

Q: In handling foreign key violations, the option to reject if the row is referenced in another table…

A: a) Set Null: It is a foreign key which means that if a record in the parent table is deleted, then…

Q: Given this image, write an SQL query to return a set of results where each row contains the car in…

A: Solution:--   1)The given question has required for the solution which is to be provided in the form…

Q: Could you please explain about foreign key with an example?

A: Given To know about the foreign key

Q: A Cartesian join between a table with 5 records and a table with 10 records returns how many rows?

A: A Cartesian join between a table with n records and a table with m records returns n*m rows.

Q: Using an implicit cursor, write an anonymous block that will display all employees who've been hired…

A: Answer: Since no data or table is provided so I will be unable to provide you the output. Also I…