- Lab
-
Libraries: If you want this lab, consider one of these libraries.
- Cloud
Query This Berkeley DB on Linux
You are working as a system administrator and have been tasked with querying an existing Berkeley DB using Python. The database file can be downloaded from the following URL: *https://github.com/linuxacademy/content-intro-to-databases-on-linux/raw/master/demo.db* You are to open the file as read-only, to ensure no data is changed, and print the value associated with the key **2**.
Lab Info
Table of Contents
-
Challenge
Open the Database
You must first download the database file:
curl -O -L https://github.com/linuxacademy/content-intro-to-databases-on-linux/raw/master/demo.dbOnce downloaded, the database should be opened as read-only, to prevent any data from being changed:
import bsddb db = bsddb.btopen('demo.db', 'r') -
Challenge
Print a Value
Next you will print the name of the third student by querying the value associated with the key 2:
print ('The name of student 2 is ' + db['2']) -
Challenge
Close the Database
Lastly, you should close the database file and exit the Python interrupter:
db.close()Pressing Ctrl d will exit the interpreter.
Real skill practice before real-world application
Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.
Learn by doing
Engage hands-on with the tools and technologies you’re learning. You pick the skill, we provide the credentials and environment.
Follow your guide
All labs have detailed instructions and objectives, guiding you through the learning process and ensuring you understand every step.
Turn time into mastery
On average, you retain 75% more of your learning if you take time to practice. Hands-on labs set you up for success to make those skills stick.