What restrictions apply to the use of the aggregate functions within the SELECT statement? How do nulls affect the aggregate functions?

Q: What will be the result of the following queries: a) select S.stName, R.crsId, R.grade from student…

A: Left outer join will return all rows from the table specified in the from clause i.e. table…

Q: In what situations is it necessary to add a GROUP BY clause in a query?

A: Group By clause is used when we have to group the data into groups.  It is used when we want to…

Q: Which of the following Statements stands true for Full outer-join? Select one: a. It pads tuples…

A: Option- The tuples are taken from the right relation and compare with the left relation but not this…

Q: Since the COURSE table maintains referential integrity, every entry entering the SECTION table must…

A: Constraints can be specified either when the table is created using the CREATE TABLE statement or…

Q: Which clause can be used to limit or filter the groups returned by a query that utilises a group…

A: To be determine: Which clause can be used to limit or filter the groups returned by a query that…

Q: What’s the difference between an equality and a non-equality join?

A: The Equality-JOIN clause is a special keyword in a Structured Query Language (SQL), which is used to…

Q: Which standard form mandates that no non-key attribute be functionally dependent on a portion of the…

A: Introduction: Relation R is in the second standard form (2NF) if it is in the first normal form…

Q: it is possible to use a NATURAL join, there are some downsides to using this type of join. What are…

A: Joins: Joins in sql commands which are used to combine rows from two or more tables. based on a…

Q: How does Oracle 12c distinguish between clauses in a SELECT statement that belong to an outer query…

A: The answer of this question is as follows:

Q: Explain how the GROUP BY clause works. What is the difference between the WHERE and HAVING clauses?

A: GROUP BY clause: This clause is used to group the number of rows having some similar values. For…

Q: Create a Queries using the Design View.

A: To create a Queries using the Design View.

Q: What is the difference between a subquery and a join? Under what circumstances would you not be able…

A: Joins and subqueries are used to query data from different tables. There are many differences…

Q: Which tuples with null values for the title property are included in the query select * from student…

A: Given is a query select * from student natural full outer join and we need to tell the condition for…

Q: Write a SELECT statement that will return the distinct productid and productname from the products…

A: SQL query: SELECT DISTINCT products.productid, products.productname, orders.order_details from…

Q: Explain the difference between an inner join and an outer join.

A: The join clause is a special keyword in a SQL (Structured Query Language), which is used to combine…

Q: Please help with the following What is a valid GROUP BY clause for the following SELECT list?…

A: Given:   Please help with the following What is a valid GROUP BY clause for the following SELECT…

Q: Produce a resulting table with data after each of the following relational join operations has been…

A: (SELECT * FROM MemberListA) UNION ALL (SELECT * FROM MemberListB);   (SELECT * FROM MemberListB)…

Q: Using the STUDENT and PROFESSOR tables, illustrate the difference between a natural join, an…

A: PRODUCT operator: It is used to find the Cartesian product of two attributes present in the…

Q: Given the following ERD, which of the following joins produce the same results. You can assume the…

A: Here, there are three relations named A, B, and C which are shown using the ERD. In this ERD,…

Q: When creating a SQL table, _____. a. include only those columns for which data will always be known…

A: Ans: When creating a SQL table,  d) you must add PRIMARY KEY NOT NULL for the primary key column(s)

Q: What’s the basic difference between the ROLLUP and CUBE extensions of the GROUP BY clause?

A: The GROUP BY clause is used to group aggregate function outcomes according to a given column. The…

Q: Perform any 2 DML Queries. Show Output: 1. Write SQL Query for finding/displaying names of nurses…

A: Information provided is incomplete. Require table schema. Kindly provide the table details to get…

Q: A(n) _____ join will select only the rows with matching values in the common attribute(s).…

A: A(n) _____ join will select only the rows with matching values in the common attribute(s).

Q: Justify how a related subquery is executed in a certain order

A: A correlated subquery (also known as a synchronized subquery) is a subquery (a query that is nested…

Q: Create both correlated and noncorrelated subqueries and know when to employ them.

A: The answer is

Q: Which of the following statements about JOIN in relational algebra is false? a. inner join only…

A: Option B is false: X join Y is not the same as Y join X

Q: 4( This clause in SQL join is used to specify arbitrary conditions or specify columns to join using…

A: To specify arbitrary conditions or specify columns to join, the ON Clause is used. The join…

Q: When is an outer join used instead of a natural join?

A: Natural join It eliminates the duplicate columns and the join is done in between the values in…

Q: Given two relations x(A,B,C,D) and y(B,C,E,F). Without using outer join expression, write a SQL…

A: The given problem is to be solved in the form of SQL query which will fetch the records from X and Y…

Q: Based on the following ER Model, write SQL statements to create the tables.   Include all the…

A: Actually, SQL stands for structured query language.

Q: Explain the difference between a primary key and a candidate key.

A: GIVEN: Explain the difference between a primary key and a candidate key.

Q: Which operator is used in the join condition to perform an outer join? Select one: a.- b.> O c.(+)…

A: OUTER JOIN: Outer Join is the joining method in which that gets all rows with matching values in…

Q: You can create both Inner Join and Left Join on same Tableau File on different worksheet. Group of…

A: Your two questions is about true and false. let's see solution of the question with explanation.

Q: Which clause of an SQL query displays the results in a specific sequence? What is the default…

A: Solution:   Answer is : SQL query displays the results in a specific sequence: ORDER BY clause   The…

Q: Rewrite the following query using a join statement (no subqueries). (0.5) SELECT productid,…

A: Find the required query given as below :

Q: What is the use of sub queries?

A: Introduction; Anywhere an expression is permitted, a subquery may be utilized. In this case, the…

Q: Write a query that uses NATURAL JOIN TO connect the EMPLOYEE and EMPPROJACT table.   Include the…

A: The above question is solved in step 2 :-

Q: Using the STUDENT and PROFESSOR tables, illustrate the difference between a natural join, and…

A: Explanation: PRODUCT operator: It is used to find the Cartesian product of two attributes present…

Q: The process of decomposing a relations into two relations is called: Select one: O Denormalization O…

A: Disclaimer: “Since you have asked multiple questions, we will solve the first question for you. If…

Q: In SQL A foreign key must exist in both tables that have a relationship. Select one: a. True b.…

A: Given: In SQL A foreign key must exist in both tables that have a relationship. Select one: a.…

Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.