SQLite in Python — Python Technical Interview Questions & Answers

SQLite in Python

SQLite in Python

  • SQLite is a file-based SQL database in the standard library. import sqlite3 — no separate server for practice. Connect to a .db file, CREATE TABLE, INSERT, SELECT with a cursor, commit, close. Perfect for learning SQL and small apps. Not every production scale. Same placeholder rule: don’t + user text into SQL.
  • Connect → execute → commit → close. That four-step line plus “stdlib, file-based” is the fresher sqlite answer.
  • SQLite in Python — output: Asha. In-memory SQLite — real SQL, no extra install.

Technical Interview Tip: Connect → execute → commit → close.

Code Examples for SQLite in Python

Example

# sqlite3
import sqlite3
con = sqlite3.connect(":memory:")
cur = con.cursor()
cur.execute("create table t(id integer, name text)")
cur.execute("insert into t values(1, 'Asha')")
con.commit()
print(cur.execute("select name from t where id=1").fetchone()[0])
con.close()

SQLite in Python — output: Asha. In-memory SQLite — real SQL, no extra install.

How to Explain SQLite in Python to an Interviewer

Explain SQLite as if you are teaching a junior — definition, then one tiny script.

sqlite3 stdlib. File DB. No server needed for basics.

What does the example print, and why?

SQLite in Python — output: Asha

What mistake do freshers make with SQLite?

commit after write.