How can the OVER clause enhance the flexibility of window functions in SQL?

What are the potential issues with over-relying on the COALESCE function in SQL?

Is this statement true or false: Oracle SQL allows full expression-based use of both provided (built-in) and user-definable functions.

SQL ( ORACLE SQL DEVELOPER ) : THIS IS FIRST , SECOND AND THIRD TABLE for the Task 1 to solve : create table author_45( auth_name char(50), gender char(1), age number(3), nationality char(50), PRIMARY KEY (auth_name) ); create table book_45( isbn number(10), title char(50), ver_no number(2), publisher char(50), PRIMARY KEY (isbn) ); create table writtenBy_45( isbn number(10), auth_name char(50), yr_published number(4), price number(3), no_copy number(4), PRIMARY KEY (isbn,auth_name), foreign key (isbn) references book_45, foreign key (auth_name) references author_45 ); insert into author_45 values ('Benoit','F',42,'French'); insert into author_ 45 values ('Antonini','M',33,'Italian'); insert into author_ 45 values ('McAven','F',31,'Australian'); insert into author_ 45 values ('Williams','M',90,'British'); insert into book_45 values (101,'atabases',1,'Possum'); insert into book_45 values (202,'SQL Primer',2,'Hall'); insert into book_45 values...

Create a Pl SQL package named EMP_PKG which will have the above three functions and procedures as follows: CALC_TAX - private CHECK_FNAME - Public AVG_SAL - Public

Explain how CRUD functions may be performed using the SQLiteOpenHelper and SQLiteCursor classes.

In what scenarios is the CAST function preferred over CONVERT in SQL for type conversion?

How can you dynamically execute a SQL query in PL/SQL? a. Using EXECUTE IMMEDIATE statement b. Using DBMS_SQL package c. Using FETCH statement d. Using OPEN-FOR statement

What potential problems might arise when using non-deterministic functions in SQL?