Give one point of difference between an equi-join and a natural join.

mcq: Which of the following is the correct syntax for a left outer join?     Select column-list from T1 outer join T2 left where join-condition;     Select column-list from T1 outer left T2 join where join-condition;     Select column-list where left T1 = T2;     Select column-list from T1 left outer join T2 ON join-condition; 2 Which of the following statements is NOT CORRECT about stored procedures?     They can be invoked within triggers     They can be invoked within other procedures     They can be shared by multiple programs     They use the RETURN statement 3 Which of the following statements is  NOT TRUE with respect to PL/SQL cursors?     %ISOPEN is used to make a cursor ready for processing     %FOUND returns true if the last FETCH returned a row when a cursor is closed     %NOTFOUND returns true if the last FETCH did not return any row.     %FOUND returns true if the last FETCH returned a…

JOIN TABLES One row in the PAT_ENC table represents one patient encounter. One row in the ORDER MED table represents one medication order. One patient encounter can have many medication orders but one medication order can only have one patient encounter. In other words, the cardinality of this PAT_ENC to ORDER_MED relationship is one-to- many. You start a query with PAT_ENC. You then add ORDER_MED using an inner join. What is true about the granularity of the result set before and after adding the ORDER_MED table? SELECT ONE OF THE FOLLOWING A. The granularity stays at one row per patient encounter. B. The granularity stays at one row per medication order. C. The granularity changes from one row per patient encounter to one row per medication order on an encounter. D. The granularity changes from one row per medication order to one row per patient encounter.

All of the following are algorithms to evaluate join, except: a. Nested loop       b. Index-nested loop c. Sort-merge         d. B+-tree Which level of Normalization should you get to on most Relational Database schemas: a. First               b. Second         c. Third      d. Fourth      e. Fifth

In what kinds of situations would it make sense to use the query "select * from student natural full outer join takes natural ful"?

What is the difference between an EXCEPT (MINUS) query and a UNION query?

Run the problem using Relational Algebra, below the problem I added the needed table. Use self join find the answer   (4) Find the name (fname,lname) of the direct supervisor of “Mary Smith”. (“Mary Smith” is an employee).   group: emplyeeemployee = {fname, lname, ssn,superssn, departnumber'Mary', 'Smith',111, 222, 11'Green', 'Marjorie',333, 222, 12'Gren', 'Cheryl',222, 777, 14}

When an inner join is done between Data Set A containing (1,3,5,7,9,10,12,14) and Data Set B containing (2,4,5,9,10,11,13,14,15,18), the result would be a set that contains

Consider a scenario where you have a table on the left with 10 rows and a table on the right with 5 rows. What is the maximum number of rows that might appear in a right join