Recite the rule about columns in SELECT when a GROUP BY clause is used.

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: Translate your ER diagram into a relational schema in the form of SQL DDLs. Choose appropriatedata…

A: The schema represents the layout of the database. For instance, suppose there are three to four…

Q: Given the following relational schema (Hint: the bold text represents a primary key), Department…

A: From the above question, we have the condition as ,dept_code and stu_num are primary keys that means…

Q: Create an SQL database of the above ER-diagram using “create table” statements. The type of…

A: ER DIAGRAM: Please run each query one by one

Q: 28. Show the employee name and the employee job title by the same field give the field new name.…

A: As per Q and A guidelines, we are only allowed to solve 1 question, so solving Q8. only. Please post…

Q: May someopne please help me with dbms? a. Primary keys in student and subject tables: b. Composite…

A: Ans a:  Primary keys in student and subject tables:  Student_Number, Subject_Number   Ans b:…

Q: When creating DB tables that contain foreign key references to other tables, you must: A first…

A: When creating the Data Base tables that contain foreign key references to other tables, then we must…

Q: Display the Employee name and designation in one column. Display all records from table whose name…

A: As per our guidelines we are supposed to answer only 1st three parts. Kindly repost the remaining…

Q: Write a detailed contrast between "Relation" & "Relationship" in Dbms

A: Relation refers to a single table in DBMS whereas relationship refers to how two tables are…

Q: . Define the following constraints in Dbms with suitable example Write about 4 to 5 lines for each…

A: Column-Level Constraints : Constraints may be such for individual columns as a {part of} the column…

Q: The statement, „ removes the table Smaller from a DBMS. Select one: a.REMOVE TABLE Smaller; b.REVOKE…

A: Answer : d DELETE TABLE smaller

Q: Based on the following ER Model, write SQL statements to create the tables. USING SQL NOT MYSQL…

A: A relational database contains tables also known as relations. A relation contains tuples and…

Q: When creating DB tables that contain foreign key references to other tables, you must: first create…

A: Ans 1: When creating DB tables that contain foreign key references to other tables , you must : a)…

Q: Ques. Under what circumstances are composite primary keys appropriate?

A: The composite primary key is the combination of more than one primary key.

Q: What would be the result of the SQL statement CREATE UNIQUE INDEX idxA ON TabA(A), if the column A…

A: What would be the result of the SQL statement CREATE UNIQUE INDEX idxA ON TabA(A), if the column A…

Q: Write an ALTER TABLE statement to add a CHECK constraint to the ENROLLMENT table to ensure that the…

A: The constraint is identical to an index, except that it can also be seemed to link two tables…

Q: 10. print FLOOR(SQRT(5)) statement returns a) 5. b) 2. с) 3. d) 2.23. e) 25. 11. Which one of the…

A: I have given an answer in step 2.

Q: What are nulls? Which field cannot accept null values? Why?

A: NULL is a special keyword in SQL that depicts an empty value. It signify a missing or unknown…

Q: Why do we use commutative filters in DBMS?

A: In this question, we are going to discuss why we are going for commutative filters in DBMS.

Q: Name at least 3 reasons why constraints should always be enforced by the DBMS instead of the…

A: Introduction: Constraints:  These are the rules/restrictions that are used in DBMS to ensure that…

Q: Write a detailed contrast between "Primary key" & "Composite key" in Dbms

A: Primary Key is that column of a table whose each row data is uniquely identified. It can never be…

Q: Explain two integrity rules used in DBMS.

A: Two integrity rules used in DBMS.

Q: What is the difference between a UNIQUE and a PRIMARY KEY constraint? (See the tables in the JustLee…

A: Introduction: When creating a table, a primary key is used to identify each row in the table, while…

Q: Create dept_manager table with emp_no as primary key and auto increment and not null for other…

A: SUMMARY: -Hence, we discussed all the points.

Q: The figure below shows the created tables (DOCTOR, APPOINTMENT and PATIENT). However, after you…

A: It is defined as a computerized data-keeping system. Users of the system are given facilities to…

Q: Write appropriate SQL DDL statements to define the database schema you made in the previous…

A: CREATE TABLE statement. The CREATE TABLE is a DDL statement that is used to create tables in the…

Q: What is a RANKING function and what are the four RANKING functions in dbms?

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

Q: Write an SQL statement to add three new rows to the PET_OWNER table.Assume that OwnerID is a…

A: Given: Write an SQL statement to add three new rows to the PET_OWNER table.Assume that OwnerID is a…

Q: altering the framework of a table using SQL? In general, what different kinds of shifts are…

A: SQL "continuation"; Structured Query Language)[5] is a domain-explicit language utilized in…

Q: parts that follow are the building blocks of most relational DBMSs' physical data structures

A: Physical database structure refers to the materialization of a database into a single structure.…

Q: Composite primary key can be defined at table level only. Select one: True False

A: As per the question asked the, the proper solution of the question is given in below step:

Q: how can I write an SQL script for those spific tasks  also by using the SHOW statment and the…

A: I have used DISPLAY after every SQL statement for displaying the outputs. In Step 2 I have done all…

Q: For each salesperson, list the total number of orders by month for the year 2015. (Hint: If you are…

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

Q: ap each of theER diagrams given below to a relational database by specifying its SQL schema. Make…

A: The given problem is related to desiging the database where the model in the form of entity…

Q: Join two relation in DBMS

A: Join is a combination of a Cartesian product followed by a selection process. A Join operation pairs…

Q: convert this ER- Diagram into Relational Scheme.

A: LOGIN(LoginID, Login_username, User_passwlrd) USER(Userid, Name, Phone_Number. email,Adress)…

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: Explain how referential integrity is established in databases that are SQL:1999 compliant. Explain…

A: The referential integrity is established using SQL REFERENCES clause and it stops the foreign key…

Q: Question 10 Format masks affect how Oracle stores the data. True False

A: Data masking assumes that you have created an application data model (ADM) with precise columns as…

Q: What is the definition of a calculated field? What is the best way to utilise one in a SQL query?…

A: Given that: What is a computed field? How can you use one in an SQL query? How do you assign a name…

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.