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what is the Relation between SQL and MySQL in terms
Ask: what is the Relation between SQL and MySQL in terms of database system
Explanation:
Here are the primary differences between SQL and MySQL:
While SQL is a language used for operating different relational databases, MySQL boasts of being the first open-source relational database in the early 90s. SQL is a query language, whereas MySQL is a relational database that uses SQL to query a database.
A blind sql injection attack is used when which of
Ask: A blind sql injection attack is used when which of the following is true
Step-by-step explanation:
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write different syntax of SQL and explain
Ask: write different syntax of SQL and explain
Answer:
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what is the difference between SQL and API
Ask: what is the difference between SQL and API
Answer:
There is no difference both use for same purpose. Akib If there is no similarity then there is no difference but you can say there is relation with API and SQL queries. API use to get data from database through server side to client side. So SQL queries play important role in API.
what is the difference between SQL and MySQL?
Ask: what is the difference between SQL and MySQL?
Answer:
What is the difference between SQL and MySQL? In a nutshell, SQL is a language for querying databases and MySQL is an open source database product. SQL is used for accessing, updating and maintaining data in a database and MySQL is an RDBMS that allows users to keep the data that exists in a database organized.
Explanation:
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what is the difference between SQL and API?
Ask: what is the difference between SQL and API?
There is no difference both use for same purpose. Akib If there is no similarity then there is no difference but you can say there is relation with API and SQL queries. API use to get data from database through server side to client side. So SQL queries play important role in API.
Evaluate the following SQL commandSELECT employee_id, hire_date, department_name FROM employees,
Ask: Evaluate the following SQL command
SELECT employee_id, hire_date, department_name FROM employees, departments
WHERE departments.department_id = employees.department_id
Select one:
a.
The SQL command will produce an error.
b.
The SQL command will give an incorrect output.
c.
The SQL command should have ALIAS for the table to produce a correct output.
d.
The SQL command will produce a correct output.
Answer:
Explanation:
D. This should produce a correct output.
I’m making a number of assumptions here. More specifically, that this is likely referring to the standard MySQL syntax (or identical in this context) and that both tables “employees” and “departments” contain columns “employee_id”, “hire_date”, and “department_name”. If one or both of these assumptions are wrong, then the answer should be A (error).
SELECT employee_id, hire_date, department_name
FROM employees, departments
WHERE departments.department_id = employees.department_id
This WHERE line compares the department_id from the “departments” table and “employees” table. It will only SELECT the “employee_id”, “hire_date” and “department_name” of the records FROM both tables IF their “department_id” values are the same.
Evaluate the following PL/SQL. At what line number is the
Ask: Evaluate the following PL/SQL. At what line number is the error of the PL/SQL?
DECLARE
v_deptno NUMBER := 800;
e_invalid EXCEPTION;
BEGIN
DELETE FROM departments
WHERE department_id = v_deptno;
IF SQL % NOT_FOUND THEN
RAISE e_invalid;
END IF;
COMMIT;
EXCEPTION
WHEN e_invalid THEN
DBMS_OUTPUT.PUT_LINE(‘No such department id.’);
END;
Select one:
a.
8
b.
2
c.
3
d.
7
e.
12
Answer:
D. 7
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What is the difference between count, count distinct, and count(*)
Ask: What is the difference between count, count distinct, and count(*) in sql?
Count would show a result of all records.
Count distinct will result in showing only distinct count.
Count(*) will count the number of records.
Evaluate the following SQL command SELECT * FROM jobs WHERE
Ask: Evaluate the following SQL command SELECT * FROM jobs WHERE job_title LIKE ‘Manager%’ Select one:
a. The SQL command will produce an error.
b. The SQL command will display all employees with Manager position
c. No records will be displayed
d. The SQL command will display all records in the database
Answer:
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