employee (ID, person_name, street, city) works (ID, company_name, salary) соmpany (compапy-лате, сity) manages (ID, manager_id) Figure 4.12 Employee database.

Q: 1. Write a query to create a table employee with Emp No (4), Ename, Department, and Salary and…

A: answers: 1> part1 create table employee ( EmpNo int, Ename varchar(255), Department varchar(255),…

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: Write a SQL trigger to carry out the following action: If an account is deleted, then write a…

A: create trigger [trigger_name] [before | after]  {insert | update | delete}  on [table_name]  [for…

Q: Write an SQL query based on the described database for a student exchange program coordinator. To…

A: Introduction:- Below is the complete solution with explanation in detail. Below is the SQL query for…

Q: The relational database schemas are as follows: department(dept-name, building, budget)…

A: Given : The relational database schemas are as follows:department(dept-name, building,…

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: oblem: implement database in MySQL for music(table: artist, album, track , played) and add multiple…

A: It is defined as an organized collection of structured information, or data, typically stored…

Q: . Write an SQL query to fetch all the EmpIds which are present in either of the tables –…

A: Q 1. Write an SQL query to fetch all the EmpIds which are present in either of the tables –…

Q: For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note…

A: Query using an outer join is as follows, select ID from employee natural left outer join manages…

Q: Consider the query:with dept_total (dept_name, value) as(select dept_name, sum(salary)from…

A: Given: Consider the query:with dept_total (dept_name, value) as(select dept_name, sum(salary)from…

Q: Find the result relation of the above query

A: The Relational is query is a very interesting one. Let's understand step by step. The Infinite…

Q: 1. Write a query to create a table employee with Emp No (4), Ename, Department, and Salary and…

A: create table tableName(columnName data type, ……) alter table tableName modify columnName data type…

Q: Given the database schema R(A, B, C), and a relation r on the schema R, write an SQL query to test…

A: Functional dependency An attribute C does have a functional dependency on valid instances of…

Q: Write a query to find the name of the student(s) who has scored maximum mark in Software…

A: Introduction: As per the given problem statement we are required to develop a SQL code to find the…

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: With the three join types included with the outer join classification (LEFT OUTER JOIN, RIGHT OUTER…

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

Q: For the following Employee database, write a query to find the ID of each employee with no manager.…

A: With outer join Without outer join  Without outer join : nested query

Q: How many inner joins are possible in the attached scenario? write a query for inner join, left join,…

A: There are 3 inner joins possible. They are: between country and province; here CtrID is the primary…

Q: Consider the query:with dept total (dept name, value) as(select dept name, sum(salary)from…

A: Solution  Given question is  Consider the query:with dept total (dept name, value) as(select dept…

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: Consider the education database , where the primary keys are underlined. Give an expression in SQL…

A: 1)  SELECT full_name, school_name FROM Student NATURAL JOIN School WHERE age>=10 AND age<=15

Q: Consider the bank database of Figure 16.9, where the primary keys are underlined. Construct the…

A: Following is the nested query  that retrieves the branch name with B and the account number with…

Q: Consider the relations: • PROJECT(proj#, proj_name) EMPLOYEE(emp#, emp_name) ASSIGNED(proj#, emp#)…

A: The SELECT statement is used to select data from a database. In order to show employee name and…

Q: Write a query to display the block number and number of departments in each block and give an alias…

A: - We need to highlight the SQL query for the desired operation of retrieving the department data.

Q: It may be advantageous to keep the join as a materialized view if a parallel data-store is used to…

A: materialized a view is a database object that contains the results of a query. For example, it may…

Q: Implement the following ER model and sample data using Oracle SQL Developer and your CDM Oracle…

A: This is the implementation of the given ER model: CREATE TABLE STUDENTS(StudentID NUMBER(5) PRIMARY…

Q: Show the result of the following queries as it would apply to the database state given above. 1.…

A: I cannot see any database here, Please repost the question with the database.

Q: Consider the library database of Figure 3.20. Write the following queries in SQL.For each publisher,…

A: Here, Three tables are created. member book borrowed The values are inserted into the tables.

Q: For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note…

A: Database: The database contains the collection of information organized in such a way that can be…

Q: q/ Consider the employees database where the primary keys are underlined. Give an expression in SQL…

A: 1. Query: SELECT e.ID, e.Name, e.age, e.address, e.salary, e.department, e.position,…

Q: In a sql database give an example of a search problem that will work with an inner join and will not…

A: Find the answer given as below :

Q: It may be advantageous to keep the join as a materialized view if a parallel data-store is used to…

A: Introduction:   Consider storing the given two relations in a cloud data storage system.…

Q: Differentiate the type of query given below and interpret the meaning step-wise if it’s a sequential…

A: Sequential Query: The sequential query is a series of multiple master queries in which the first…

Q: Let the following database schema be given. Person(idnumber, name, dob, mother, father) primary key…

A: a) Will use CTE to prepare a hierarchical result set WITH #results AS(SELECT idnumber,nameFROM…

Q: The ER diagram of the database is given above. Write the following queries. 1.Write a query to get…

A: As said in the question, we need to use employees table

Q: Modify the recursive query in Figure 5.16 to define a relationprereq_depth(course_id, prereq_id,…

A: The given recursive query has to be modified so that the depth attribute denotes the level of…

Q: How can you implement 1:M relationship in a database composed of two tables ? Explain with example.

A: One-to-Many Relationship: When one record in a database table is associated with more than one…

Q: For the database  Figure, write a query to find the ID of each employee with no manager. Note that…

A: Query using an outer join is as follows, select ID from employee natural left outer join manages…

Q: Consider the following database. Write a SQL query to express the query student (person_name,…

A: finding sql query for the given equation

Q: Consider the following database table named water_schemes : water - schemes scheme_no district_name…

A:

Q: Consider the library database of Figure 3.20. Write the following queries in SQL.Find the average…

A: Explanation: The below query is used to print the average number of books borrowed by the…

Q: Consider the given bank database. Compose SQL Queries for each of below scenarios.…

A: a) query to select all branch names from city chicago SELECT branch_name FROM branch WHERE…

Q: Create a query for displaying e1.first_name with e1.last_name of employee under column alias…

A: SQL has a built in function called as  CONCAT(VAL1,VAL2,....VAL255) AS Concatenated value.

Q: Write an SQL statement, using the inner join construct, that will, for the lecturer John Smith, list…

A: SQL queries approach:   1- For the first question needs to fetch records by inner join and…

Q: Can an outer join be easily implemented when joining more than two tables? Why or why not?

A: Outer join is not easily implemented in more than two tables.

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 ER diagram of the database is given above. Write the following queries. 1. Write a Query to…

A: As said in the question, we need to use employee table

Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.