Denison CS181/DA210 Homework

Before you turn this problem in, make sure everything runs as expected. This is a combination of restarting the kernel and then running all cells (in the menubar, select Kernel$\rightarrow$Restart And Run All).

Make sure you fill in any place that says YOUR CODE HERE or "YOUR ANSWER HERE".

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SQL Exercises on school Database

import pandas as pd
import os
import os.path
import json
import sys
import importlib

module_dir = "../../modules"
module_path = os.path.abspath(module_dir)
if not module_path in sys.path:
    sys.path.append(module_path)

import dbutil
importlib.reload(dbutil)

%load_ext sql

Instructions

Set User Credentials

Edit creds.json to reflect your mysql user and password

This must be done prior to executing the following cell

In general, you will be able to choose whether you are using the remote MySQL database or the SQLite database(s) by setting the dbsource variable to "mysql" or "sqlite" respectively. The function dbutil.db_cstring function computes a connection string for the chosen dbsource using the information in the creds.json file. If the last argument to this function is present, the generated connection string uses that datbase as superceding the name of the database in creds.json.

dbsource = "mysql"
db = "school"
cstring = dbutil.db_cstring(dbsource, "creds.json", ".", db)

print("Connection string:", cstring)

%sql $cstring

from IPython.display import Image
Image("hwimages/school_schema.jpg", width=600, height=600)