(Solution) If The 'FROM-list' Of An SQL Statement Contains Two Tables Separated By A Comma, Such As FROM TableA, TableB, SQL Will Take The Cartesian Product... | Snapessays.com


(Solution) If the 'FROM-list' of an SQL statement contains two tables separated by a comma, such as FROM TableA, TableB, SQL will take the Cartesian product...


Hi,I have a question to which you already answered. Please follow the link https://www.coursehero.com/tutors-problems/Computer-Science/8746852-1-If-the-FROM-list-of-an-SQL-statement-contains-two-tables-sepa/ or look at attached document.Could you please help me with this assignment? 1. If the ‘FROM-list’ of an SQL statement contains two tables separated by a comma, such as

 

FROM TableA, TableB, SQL will take the Cartesian product (join) of the two tables.

 

2. The “ORDER BY” clause in SQL allows us to order the answer by the attributes that we

 

specify.

 

3. In ERDs, it is possible for a relationship to only involve precisely one entity set.

 

4. In an SQL statement having a GROUP BY clause, SQL will create collections according to

 

the GROUP BY before

 

it applies the conditions specified in the WHERE clause.

 

5. ANSI standard SQL uses the symbol “#” to represent a string of any length of unspecified

 

characters, while the symbol “@” is the wildcard for any single character.

 

6. SQL will allow you to have only precisely one aggregation function in a single SELECT

 

statement.

 

7. In SQL, an asterisk(*) after the SELECT verb means that ALL attributes are to be

 

projected.

 

8. In SQL, the qualifications/conditions in the HAVING clause are applied after

 

‘collections’

 

are created as per the GROUP BY clause.

 

9. Identifiers in ERDs are either Unique (identifies one and only one entity) or Non-Unique

 

(identifies a set of entities). Unique Identifiers in ERDs become the primary keys in

 

relational databases.

 

10. Given tables STUDENT

 

(Stuid

 

, Stuname, Major, Credits), FACULTY ( Facid

 

, Facname,

 

Dept, Rank),

 

CLASS ( Course

 

#,

 

Facid

 

, Sched, Room) and GRADES (

 

Course

 

#,

 

Stuid

 

, Grade),

 

the following SQL query will correctly project the stuname, stuid and grade of all students

 

taking courses from the faculty member with facid of 55443322, and sort these

 

alphabetically by stuname.

 

SELECT stuname, stuid, grade

 

FROM grades

 

WHERE facid = “55443322’

 

ORDER BY stuname ASC;

 

1. Given ORDER_ITEM (

 

OrderNumber

 

,

 

SKU

 

, Quantity, Price, ExtendedPrice) and

 

1

 


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This question was answered on: May 23, 2022

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