You define a PRIMARY KEY constraint on the EMP_ID column for a table named EMPLOYEES that you created  Which actions occur automatically?

Q: Display the data of all employees who do not have managers. (means whose managers are null) Display…

A: Given: CREATE TABLE DEPT ( DEPTNO NUMBER(10) NOT NULL, DNAME VARCHAR2(50) NOT NULL, LOC…

Q: You are required to create the following tables in a database named STUDENT_REGISTRATIONS. Ensure…

A: create the following tables in a database named STUDENT_REGISTRATIONS.:-

Q: Write the SQL command for the following statement based on the Figure 1. a) Drop the constraint…

A: A.ALTER TABLE PropertyForRent DROP CONSTRAINT PropertyForRent_branchNo_fk; B.RENAME TABLE…

Q: The relational schema shown below is part of a hospital database. The primary and foreign keys are…

A: Here we will use to_char() function which converts date format into string and then we will apply…

Q: In the book Database Systems: Design, Implementation & Management - 13th edition Problem 5…

A: “ORDER BY” Clause: SQL contains "ORDER BY” clause in order to sort rows. The values get sorted in…

Q: Write the SQL statements for the following User table. User_id Name City Order_date Purchase_amount…

A: To create a table in SQL, create table command is used. Ans 1. The required query is: CREATE TABLE…

Q: Create an Oracle sequence to generate values for volunteer numbers. The sequence should startwith…

A: sequence is used to generate a unique value in a primary key column. After creating sequence…

Q: 1. Write a query to alter the “Student” table, by setting the default value of Age > 20. 2. Drop…

A: Q. IN MYSQL 1. Write a query to alter the “Student” table, by setting the default value of Age >…

Q: 2) Create in PL/SQL a stored procedure called 'Del Details' to delete the record of orderedProduct…

A: 1)  Below is the stored procedure to Delete the details from OrderedPRoduct.  we use the create or…

Q: Create the following tables in your database with the following schema: Table: Employee +- | Column…

A: Here are all the queries asked in above:

Q: Draw the ERD, _that is implemented by the following SQL code: CREATE TABLE PROJ_USER USER_ID NUMBER…

A: ER diagram: The ER diagram for the given SQL code:

Q: Suppose you created a PRIMARY KEY constraint at the same time you created a table and later decide…

A: The answer is given below,

Q: Write stored procedure in SQL Find all employees whose salary is larger than the salary of at least…

A: Answer: I have done code  and also I have attached code as well as code screenshot.

Q: Write a query to display job ID, total salary and employee name whose job_id contains “REP” and…

A: We have 2 tables. One is emp other is dept. Let take high sal be the total salary (as the table are…

Q: Question 9 : Fill in the blanks in the following table with types of index. Index field is a key…

A:

Q: Consider the following relation schemas:   Department (dnumber, dname, employee_count), PK: dnumber.…

A: Create a trigger on the relational schema, to count the number of employees in the department table…

Q: Create a table Customer ; ID | NAME |AGE|ADDRESS | SALARY Select * from customers; I IR | NAME | AGE…

A: Triggers are stored programs, which are automatically executed or fired when some events occur.…

Q: #3 At a given organization, the COVERAGE_MEMBER_LIST table has 500 rows of data. Exactly 200 of…

A: If count Function can be used as count(*)  will return the number of rows in a specified table or…

Q: Create  a SQL statement for the ROOMS table using the table structure below:   Table Name: ROOMS…

A: Given: Create  a SQL statement for the ROOMS table using the table structure below:

Q: Show accumulated high salary and low salary from SALGRADE table.  Display the highest, lowest, sum,…

A: Given: Show accumulated high salary and low salary from SALGRADE table.

Q: please use sql to answer the following question an erd has been add a) Add a new row in the ORDERS…

A: Add a new row in the ORDERS table with the following data: Order# = 1021, Customer# 1009, and Order…

Q: CREATING TABLES USING oracle APEX   CREATE TABLE DEPT ( DEPTNO NUMBER(10) NOT NULL, DNAME…

A: select * From emp;     i. Display the employee id, name, salary, commissioned salary (incremented…

Q: SQL Server provides with three views to display the relations in an SQL Server database. These views…

A: SQL server provides with three views to display relations in an SQL Server Database. These views are…

Q: to delete a table, that is referenced by other tables, from your database; you use use the command:…

A: The suitable option is (b).

Q: In relational algebra, what does the operator P do? Select one: O a. Performs a join between two…

A: Functional dependency is the relation that exists between primary keys and non-key attributes…

Q: The Car Maintenance team also wants to store the actual maintenance operations in the database. The…

A: SQL CODE FOR TABLE CREATION OF TABLE MAINTENANCES:-  CREATE TABLE MAINTENANCES( CAR_ID CHAR(5),…

Q: One of the junior database developers has encountered some errors in a query they are working on.…

A: For printing the information in the console for the given PL/SQL code we need to set the server…

Q: Write an SQL query for the following questions: List the name of doctors with the number of written…

A: To Solve both queries we need to apply count(*)  function as shown below:

Q: Your task for this assignment is to use SQL to implement the basic relational operations of…

A: 1. Answer:   CREATE TABLE orders (orderID int, orderName varchar(255), status varchar(255));INSERT…

Q: Using the below tables in the stated database create a query that JOINS the aforementioned tables…

A:

Q: Enter the first name: Lewis Enter the last name: Crow Enter the date of birth: 16-OCT-49 Enter…

A: SQL is the structured query language, it is used to extract and manipulate the data from the table.…

Q: Given two relations named A and B, if we q-JOIN A and B, the maximum number of attributes in the…

A: Given two relations named A and B, if we q-JOIN A and B, the maximum number of attributes in the…

Q: in sql  An index is automatically created for a FOREIGN KEY constraint.  Select one: a. True b.…

A: b) False

Q: Assume that you have a table Anc that contains two columns: employee name e namen and the salary…

A: Revoke syntax:-  To increase sal column by 15% , use sal+sal*15/100 revoke permissionName on…

Q: ) Write a SAS SQL statement to retrieve all columns from PG1.STORM_FINAL. (b) Modify the query to…

A: SAS SQL statements are given below :

Q: What happens if we don’t specify the WHERE clause in an SQL DELETE FROM statement? a) statement…

A: The DELETE statement is used to delete existing records in a table. If the where clause is omitted,…

Q: What are the customer IDs and names of all customers, along with the order IDs for all the orders…

A: SQL (Structured Query Language) is designed primarily for managing data in a relational database…

Q: A Trigger is executed when you insert, update or delete data in a Table specified in the Trigger.…

A: Syntax CREATE TRIGGER <TriggerName> on <TableName> FOR INSERT, UPDATE, DELETE AS \Create…

Q: ЕMP EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO Dept DEPTNO DNAME LOC - MGR field is foreign key…

A: Table creation: create table Dept (DEPTNO varchar(10) primary key, DNAME varchar(20), LOC…

Q: The following constraints are commonly used in SQL: AAA"Adding rows to a table" NOT NULL - Ensures…

A: Below I have provided the queries:

Q: QUESTION 4 constraint may be used to place a restriction on a column to ensure that no duplicate…

A: NO duplicate value means all the values in the column are different

Q: For each of the following statements, circle T (True) or F (False)

A: Defined the given statement true or false

Q: Problem 27 Write a procedure named prc_cust_add to add a new customer to the CUST_MYSQL table. Use…

A: Actually, SQL  is a structured query language.

Q: CREATING TABLES USING oracle APEX   CREATE TABLE DEPT ( DEPTNO NUMBER(10) NOT NULL, DNAME…

A: create a table

Q: Given the following relation: Movie (MovieID, Title, Genre, Year) Write a PL/SQL block of code that…

A: Given:  Movie (MovieID, Title, Genre, Year) Write a PL/SQL block of code that performs the following…

Q: Computer Science Use OlympicsDBv2. Create a ChangeLog table in the database that will be used as a…

A: Answer: I have given answer in the brief. you can edit from primary key.

Q: Subject: Database Write the SQL statements for following modification tasks: a) Add constraint to…

A: According to the provided information: We need to create SQL query for the addition of a primary…

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.