in sql The EMPLOYEE table contains these columns: EMP_ID NOT NULL, Primary Key SSNUM NOT NULL, Unique LAST_NAME VARCHAR2(25) FIRST_NAME VARCHAR2(25) DEPT_ID NUMBER Foreign Key to DEPT_ID column of the DEPARTMENT table SALARY NUMBER(8,2). You execute this statement:CREATE INDEX emp_name_idx ON employee(last_name, first_name); Which statement is true? Select one: a. The statement creates a composite non-unique index b. The statement creates a composite unique index. c. The statement creates a function-based index. d. The statement fails because of a syntax error.

Q: create table emp ( eid number(7), fname char(20), lname char(20), salary   number, primary key…

A: Since you have not provided the database name to write the SQL code so I am using MySQL database to…

Q: in pl /sql the commend is like this  create table bb_basketstatus (idstatus number, idbasket…

A: The answer for the given question is as follows.

Q: Complete the SQL statement to generate the Result table. The column names in the SELECT clause must…

A: SELECT Order.OrderCode, Part.PartName, Order.PartNumberSELECT: This keyword is used to specify the…

Q: LETTER GRADE( PI) VARCHARI2) NOT NULL GRADE POINT MAX_GRADE MN_GRADE CREATED_BY CREATED DATE…

A: a) From which two fields in which table can you calculate the enrollment of a section? ans:…

Q: In SQL, write the appropriate statements to insert default values for these three tables, each table…

A: Prescription table: INSERT INTO prescription (pre_no,pre_date,pre_amount)VALUES (10,12,1200); INSERT…

Q: In the following PL/SQL block, determine the values and data types for each of the following cases:…

A: conclusion:In the nested block:v_customer holds a numeric value of 201 with a data type of…

Q: Some rows of a User table are shown below:   User ucode name phone scode 7 Alex 847 - 3902…

A: Names and phone numbers are among the details about different users that are included in the User…

Q: PL/SQL Create a simple loop that prints instructor names, where instructor IDs are in the range…

A: Required:   PL/SQL Create a simple loop that prints instructor names, where instructor IDs are in…

Q: How does the STUFF function help in manipulating string data in SQL?

A: The STUFF function in SQL is used to manipulate string data by inserting, replacing, or deleting…

Q: Please write SQL codes to create a sequence and name it member_seq and use it to populate below data…

A: Given: Write SQL codes to create a sequence and name it member_seq and use it to populate below data…

Q: IN SQL ** 1- Write a query clause to display the internal structure of the departments table, then…

A: As per our guidelines, we are supposed to answer only one question. Kindly repost the remaining…

Q: PL/SQL The following PL/SQL code implements a cursor and displays the first 3 highest students’…

A: The modified code  to output the average of the top three grades is....

Q: 5. Add a column to the query described in exercise 2 that uses the RANK() function to return a…

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

Q: Part I: Problem 1. Write a stored procedure that adds a new employee to lgemployee table. Pass the…

A: A stored procedure is a  program  that you can  create in the Database and also it  have different…

Q: 1. Prepare a list of orders by Shipper showing the Shipper ID, Order ID, Product ID and Quantity.…

A: In this question we have to understand about given SQL database and prepare the list of queries…

Q: PL/SQL Question I need to build pl/sql block that prompts a user for the number of visitors each…

A: Answers:- Here's a sample PL/SQL block that prompts the user for the number of visitors for the past…

Q: Question 11 Write SQL statements to answer the following question based on the ERD below. Note:…

A: The objective of the question is to write a SQL query that will list the course name, section ID,…

Q: How does the PARSE function differ from the TRY_PARSE function in SQL when converting data types?

A: Effective database administration in the world of SQL programming depends on the capacity to alter…

Q: In SQL  This sample database consists of the following tables(see image for tables and there is one…

A: 1. orderNumber is the primary key in the orders table, so it is always unique.This query selects…

Q: T-SQL procedure for MICROSOFT SQL SERVER   A: obtain the name and credit limit of the customer…

A: Given : T-SQL procedure for MICROSOFT SQL SERVER A: obtain the name and credit limit of the customer…

Q: Obtain the name and credit limit of the customer whose number currently is stored in I_CUSTOMER_NUM.…

A: Answer:-

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.