Which of the following is not a valid constraint that could be used in a CREATE TABLE statement? Select one: a.UNIQUE b.NOT NULL c.CHECK d.DEFAULT

Q: Table Name: CUSTOMERS FIELD NAME DATA TYPE CONSTRAINT DESCRIPTION (do not include this in the CREATE…

A: SQL Command to add validation in CTYPE attribute of the table CUSTOMERS is: Alter Table Customers…

Q: Write a query to show all employee name, present salary and 30% incremented salary of those…

A: The given problem is related to database query language where the CREATE table statement is given…

Q: | 7. Which one of the following should be specified in the statement if an SQL SELECT statement…

A: As you have multiple questions here we will solve the first one for you if you want any specific…

Q: Which of the following is a valid SQL statement?a. ALTER TABLE secustomersspent ADD DATE…

A:

Q: A query that returns all customer information

A: According to the question we need to create the following queries and stored procedures:3.2 A query…

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: In which clause should you include the condition "pubid = 4" to restrict the rows processed by a…

A: By the given problem, it is required to use the condition "pubid = 4" to filter the entries of the…

Q: Which clause can be used to restrict or filter the groups returned by a query based on a group…

A: Clause used to restrict the groups: The GROUP BY function is a SQL command that is used to group of…

Q: When must you define constraints at the table level rather than the column level? ( refer to the…

A:

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

A: When you define a foreign key constraint in database table, an index will not be created…

Q: Which of the following is not a valid constraint?

A: "PRIMARY KEYS" is not a valid constraint type. Hence, correct answer is option "A".

Q: Which of the following is not a valid constraint type? ( refer to the tables in the JustLee Books…

A: The PRIMARY KEYS is not a valid constraint type.

Q: Q. Based on the given table, solve the following queries. a) Write the SELECT command to display…

A: Note:- "since you have posted multiple questions and according to our guidelines we are authorized…

Q: enter null value in a column where the Unique constraint is assigned to that column

A: enter null value in a column where the Unique constraint is assigned to that column True or False

Q: 1. Which of the following is not a table constraint? a. NOT NULL b. UNIQUE c. DEFAULT d. ON UPDATE…

A: Constraints are utilized to restrict the kind of information that can go into a table. This…

Q: The Magazine table contains three fields. The Cost field is numeric. The Code and Name fields…

A: As per guidelines we are supposed to answer only first 3-sub parts at  time. please repost the…

Q: Which one of the following constraint is used along with the DROP COLUMN clause? O a. DISABLE…

A: Answer: d. DROOP CONSTRAINTS

Q: ?Which of the following commands can be used to make structural changes to an existing table FIX…

A: SQL ALTER TABLE : The ALTER TABLE command helps to modify the existing table structure and add new…

Q: Given two tables created and populated as follows:   CREATE TABLE dbo.envelope(id int, user_id…

A: What will the result be from the following query:   UPDATE docs SET doctext=pageseq FROM docs INNER…

Q: To change a primary key in table you should do the followings: use the ALTER TABLE to drop the…

A:

Q: (PL/SQL) the command need to work on Oracle. just post the command and I will check it in my Oracle.…

A: create or replace trigger salaryset before insert on MyEmployeesfor each rowbeginif :new.salary IS…

Q: Find the constraint name that references a column of a table and it can be the same table also. O a…

A:

Q: : Q1.Please write a query statement from emp table to display deptno 10’s empno, ename, sal, and a…

A: It is defined as a collection of information that is organized so that it can be easily accessed,…

Q: The Magazine table contains three fields. The Cost field is numeric. The Code and Name fields…

A: As per the requirement submitted above , kindly find the below solution.

Q: Which of the following is a valid SQL command? ( refer to the tables in the JustLee Books database).…

A: ALTER TABLE books ADD CONSTRAINT UNIQUE (pubid); This is not a valid SQL command. Valid Syntax:…

Q: The clause is used to list the attributes desired in the result of a query. Select one: O a Distinct…

A: The select clause is used in RDBMS to list the attributes in result of a query.

Q: Which of the following is not an option of ALTER TABLE statement? Select one: a.adding a new column…

A: ALTER TABLE: The SQL ALTER TABLE statement is used to add, modify, or drop/delete columns in a…

Q: Which statement will remove the column UPDATE DT from the table STATE? O You cannot drop a column…

A: DROP is the keyword used to remove data from table

Q: Which type of constraint can be used to make certain the category for a book is included when a new…

A: The CHECK constraint is used to limit the value range that can be placed in a column. If you define…

Q: Which of the following PHP statements will execute the query "select * from item" using connection…

A: Answer: Option A $sql = mysqli_query($conn, "select * from item");

Q: Which of the following is NOT TRUE about the STUDENTS table structure? Field/Column Data Type / size…

A: Not true about the students table structure

Q: PLZ hlp with the following: In SQL If you add the PRIMARY KEY constraint to a column, you must…

A: SQL is a standard language for storing, manipulating and retrieving data in databases. SELECT -…

Q: ?Which of the following symbols cannot be used in a table name .a % b none of the above .co # .d O

A: Name contains symbols but can not start with symbols. Starts with a letter only. Table name…

Q: Which of the following commands can be used to add rows to a table?a. INSERT INTOb. ALTER TABLE ……

A: The INSERT INTO command: The INSERT command in SQL is employed to add records to an existing table.…

Q: use the following picture to answer question below question 10

A: Given, CUSTOMER(CUSTID, LNAME, FNAME, CITY, STATE, PHONE) The default value is assigned to column…

Q: Which of the following statements is correct? ( refer to the tables in the JustLee Books database).…

A: The answer is d. None of the above statements is correct

SQL

SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.  

Queries

A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.