Q: Question 8To fetch multiple records from the resultset, you may use <cursor>. ............... method.fetch()fetchmany()fetchmultiple()fetchmore()

fetchmany()Reason — The <cursor>.fetchmany(<n>) method will return only the <n> number of rows from the resultset in the form of a tuple containing the records.

Question 1

Question 5Assertion. The cursor rowcount returns how many rows have been retrieved so far through fetch...() methods.Reason. The number of rows in a resultset and the rowcount are always equal.

Accepted Answer

(c)Assertion is true but Reason is false.ExplanationThe cursor.rowcount returns how many rows have been so far retrieved through fetch...() methods from the cursor. However, the number of rows in a result set and the rowcount may not always be equal. This is because the rowcount attribute of the cursor only reflects the number of rows fetched by the fetch...() methods, not necessarily the total number of rows in the entire result set.

Question 2

Question 11execute() method executes a database query from within Python.

Accepted Answer

Answer: execute()

Source: This question is from Interface Python with MySQL, Computer Science &mdash; Class 12, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Interface Python with MySQL: Question, Execute, Method, Executes, Database, Query. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 12 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Interface Python with MySQLQ1: Question 1 Design a Python application that fetches all the records from Pet table of menagerie...
Q10: Question 10 To reflect the changes made in the database permanently, you need to run ....
Q2: Question 2 Write code to connect to a MySQL database namely School and then fetch all those records...
Q3: Question 3 Schema of table EMPL is shown below : EMPL (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM,...
Q4: Question 4 Explain what the following query will do ? import mysql . connector db = mysql ....
Practice more questions from Interface Python with MySQL &mdash; Computer Science, Class 12 CBSE

Question 3

Question 6To obtain all the records retrieved, you may use <cursor>. ............... method.fetch()fetchmany()fetchall()fetchmultiple()

Accepted Answer

fetchall()Reason — The <cursor>.fetchall() method will return all the rows from the resultset in the form of a tuple containing the records.

Source: This question is from Interface Python with MySQL, Computer Science &mdash; Class 12, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Interface Python with MySQL: Question, Obtain, Records, Retrieved, Use, Cursor. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 12 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Interface Python with MySQLQ1: Question 1 Design a Python application that fetches all the records from Pet table of menagerie...
Q10: Question 10 To reflect the changes made in the database permanently, you need to run ....
Q2: Question 2 Write code to connect to a MySQL database namely School and then fetch all those records...
Q3: Question 3 Schema of table EMPL is shown below : EMPL (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM,...
Q4: Question 4 Explain what the following query will do ? import mysql . connector db = mysql ....
Practice more questions from Interface Python with MySQL &mdash; Computer Science, Class 12 CBSE

Question 4

Question 7To fetch one record from the resultset, you may use <cursor>. ............... method.fetch()fetchone()fetchtuple()none of these

Accepted Answer

fetchone()Reason — The <cursor>.fetchone() method will return only one row from the resultset in the form of a tuple containing a record.

Source: This question is from Interface Python with MySQL, Computer Science &mdash; Class 12, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Interface Python with MySQL: Question, Fetch, Record, Resultset, Use, Cursor. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 12 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Interface Python with MySQLQ1: Question 1 Design a Python application that fetches all the records from Pet table of menagerie...
Q10: Question 10 To reflect the changes made in the database permanently, you need to run ....
Q2: Question 2 Write code to connect to a MySQL database namely School and then fetch all those records...
Q3: Question 3 Schema of table EMPL is shown below : EMPL (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM,...
Q4: Question 4 Explain what the following query will do ? import mysql . connector db = mysql ....
Practice more questions from Interface Python with MySQL &mdash; Computer Science, Class 12 CBSE

Question 5

Question 8To fetch multiple records from the resultset, you may use <cursor>. ............... method.fetch()fetchmany()fetchmultiple()fetchmore()

Accepted Answer

fetchmany()Reason — The .fetchmany() method will return only the number of rows from the resultset in the form of a tuple containing the records.

Question 6

Question 9To run an SQL query from within Python, you may use <cursor>. ............... method().query()execute()run()all of these

Accepted Answer

execute()Reason — The <cursor>.execute() method is used to run an SQL query from within Python.

Source: This question is from Interface Python with MySQL, Computer Science &mdash; Class 12, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Interface Python with MySQL: Question, Run, Sql, Query, Within, Python. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 12 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Interface Python with MySQLQ1: Question 1 Design a Python application that fetches all the records from Pet table of menagerie...
Q10: Question 10 To reflect the changes made in the database permanently, you need to run ....
Q2: Question 2 Write code to connect to a MySQL database namely School and then fetch all those records...
Q3: Question 3 Schema of table EMPL is shown below : EMPL (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM,...
Q4: Question 4 Explain what the following query will do ? import mysql . connector db = mysql ....
Practice more questions from Interface Python with MySQL &mdash; Computer Science, Class 12 CBSE

Question 7

Question 10To reflect the changes made in the database permanently, you need to run <connection>. ............... method.done()reflect()commit()final()

Accepted Answer

commit()Reason — The <connection>.commit() method is used to permanently reflect the changes made in the database when working with database connections in Python.

Question 8

Question 2Write code to connect to a MySQL database namely School and then fetch all those records from table Student where grade is ' A' .

Accepted Answer

Table Student of MySQL database Schoolrollnonamemarksgradesectionproject101RUHANII76.8AAPENDING102GEOGRE71.2BASUBMITTED103SIMRAN81.2ABEVALUATED104ALI61.2BCASSIGNED105KUSHAL51.6CCEVALUATED106ARSIYA91.6A+BSUBMITTED107RAUNAK32.5FBSUBMITTEDimport mysql.connector as mysql

db_con = mysql.connect(
    host = "localhost",
    user = "root",
    password = "tiger",
    database = "School"
)

cursor = db_con.cursor()

cursor.execute("SELECT * FROM Student WHERE grade = 'A'")
student_records = cursor.fetchall()

for student in student_records:
    print(student)

db_con.close()Output(101, 'RUHANII', 76.8, 'A', 'A', 'PENDING')
(103, 'SIMRAN', 81.2, 'A', 'B', 'EVALUATED')

Question 9

Question 4Explain what the following query will do ?import mysql.connector
db = mysql.connector.connect(....)
cursor = db.cursor()
person_id = input("Enter required person id")
lastname = input("Enter required lastname")
db.execute("INSERT INTO staff (person_id, lastname) VALUES ({}, '{}')".format(person_id, lastname))
db.commit()
db.close()

Accepted Answer

This Python script uses the mysql.connector package to connect to MySQL database. Then it prompts users for person ID and last name, inserts these values into the 'staff' table, using the INSERT INTO SQL statement. After that, it executes the SQL query using the db.execute method. The changes made by the query are then committed to the database using db.commit(), ensuring that the changes are saved permanently. Finally, db.close() closes the database connection, ending the Python interface with the MySQL database.

Question 10

Question 1Design a Python application that fetches all the records from Pet table of menagerie database.

Accepted Answer

import mysql.connector

db_con = mysql.connector.connect(host = "localhost", 
                                user = "root",
                                passwd = "lion",
                                database = "menagerie")
cursor = db_con.cursor()

cursor.execute("SELECT * FROM Pet")

records = cursor.fetchall()
for record in records:
    print(record)

db_con.close()Output('Fluffy', 'Harold', 'cat', 'f', datetime.date(1993, 2, 4), None)
('Claws', 'Gwen', 'cat', 'm', datetime.date(1994, 3, 17), None)
('Buffy', 'Harold', 'dog', 'f', datetime.date(1989, 5, 13), None)
('Fang', 'Benny', 'dog', 'm', datetime.date(1990, 8, 27), None)
('Bowser', 'Diane', 'dog', 'm', datetime.date(1979, 8, 31), datetime.date(1995, 7, 29))
('Chirpy', 'Gwen', 'bird', 'f', datetime.date(1998, 9, 11), None)
('Whistler', 'Gwen', 'bird', None, datetime.date(1997, 12, 9), None)
('Slim', 'Benny', 'snake', 'm', datetime.date(1996, 4, 29), None)

Question 11

Question 3Schema of table EMPL is shown below :EMPL (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
Design a Python application to obtain a search criteria from user and then fetch records based on that from empl table. (given in chapter 13, Table 13.5)

Accepted Answer

Table EmplEMPNOENAMEJOBMGRHIREDATESALCOMMDEPTNO8369SMITHCLERK89021990-12-18800NULL208499ANYASALESMAN86981991-02-201600300308521SETHSALESMAN86981991-02-221250500308566MAHADEVANMANAGER88391991-04-022985NULL208654MOMINSALESMAN86981991-09-2812501400308698BINAMANAGER88391991-05-012850NULL308839AMIRPRESIDENTNULL1991-11-185000NULL108844KULDEEPSALESMAN86981991-09-0815000308882SHIAVNSHMANAGER88391991-06-092450NULL108886ANOOPCLERK88881993-01-121100NULL208888SCOTTANALYST85661992-12-093000NULL208900JATINCLERK86981991-12-03950NULL308902FAKIRANALYST85661991-12-033000NULL208934MITACLERK88821992-01-231300NULL10import mysql.connector

db_con = mysql.connector.connect(host = "localhost",
                                 user = "root",
                                 passwd = "fast",
                                 database = "employeedb")
cursor = db_con.cursor()

search_criteria = input("Enter search criteria : ")
sql1 = "SELECT * FROM EMPL WHERE {}".format(search_criteria)
cursor.execute(sql1)

records = cursor.fetchall()
print("Fetched records:")
for record in records:
    print(record)

db_con.close()OutputEnter search criteria : job = 'clerk'

Fetched records:

(8369, 'SMITH', 'CLERK', 8902, datetime.date(1990, 12, 18), 800.0, None, 20)
(8886, 'ANOOP', 'CLERK', 8888, datetime.date(1993, 1, 12), 1100.0, None, 20)
(8900, 'JATIN', 'CLERK', 8698, datetime.date(1991, 12, 3), 950.0, None, 30)
(8934, 'MITA', 'CLERK', 8882, datetime.date(1992, 1, 23), 1300.0, None, 10)

Interface Python with MySQL

Assertions And Reasons

Fill In The Blanks

Multiple Choice Questions

Type A Short Answer Questionsconceptual Questions

Type B Application Based Questions