Databases for Public Policy - CAPP 30235 - University of Chicago

HW 3, HW 4, and Office hours

Tue, 10 Nov 2015 06:00:00 -0600

Office Hours

Office hours tomorrow (11/1) will be 2-3. For the remainder of the class they will be Monday 2-3.

HW3 SQL on PSQL

HW3 is posted at https://classes.cs.uchicago.edu/archive/2015/fall/30235-1/psqlHW.pdf

HW4 Presentations

Pairs of students will both give a single 12-15 minute presentation on a research paper. Pay attention to dates below. You can use slides or the blackboard. Please present a summary of the paper, the interesting “take-away” of the paper (or lessons learned), and any possible concerns you may have.

The assignments are:

Mitsue Iwata - Bridgit Donnelly (Replicated Data Consistency Explained Through Baseball (11-17))
J.P. Heisel - Natnaell Mammo (A comparison of approaches to large-scale data analysis (11-19))
Lingwei Cheng - Kyle Magida (Hive: a warehousing solution over a map-reduce framework (11-24))
Santiago Larrain - Trey Sands (OLTP Through the Looking Glass and What We Found There (12-1))
Xiaorui Tang - Christine Cook (Resilient Distributed Datasets: A Fault-Tolerant Abstraction for In-Memory Cluster Computing (12-3))

HW 2

Wed, 28 Oct 2015 07:00:00 -0500

HW2 ER Modelling

HW2 is due 11/1 at 11:59 pm. Email digital submissions (e.g. draw ER diagram in powerpoint/open office/visio/etc or scan a nice hand drawn model) to Adam and myself with a subject of [CAPPDB] HW2 Submission. Include your name in the submission file(s).

Problem 1. Simple Movies DB

Build an ER model to capture the following requirements. Explicit relationships are not given, you must determine the relationships, cardinality, and participation requirements.

A new app is interested in storing information about movies, actors, and studios that make movies. Design an ER diagram for the following data requirements:

A movie has a title, run length in minutes, and a single genre (e.g. horror, comedy).
Movies have sequels.
An actor has a name, age, gender, and minimum salary. An actor must have been in at least one movie to be considered an actor.
A movie has a single director. Directors have name, age, and a favorite genre. An actor cannot be a director.
A movie is produced by studios. Each studio has a name and zip code.

Problem 2. Simple Movies II

Modify the previous ER diagram such that:

A movie is produced by a studio, and has a list of producers. Each producer has a name and age.
In a given movie an actor, director, and producer can be the same person

Problem 3. Music Store

Design a ER diagram for a database for an application that sells digital albums and songs, and allows users to create playlists.

A song has a title, length, an artist (e.g. band or person), and a set of composers.
An artist has a name and a number of members.
A composer has a name and age. A composer must have written at least one song.
An album is composed of songs, an album cover (a string), and a track order (ie SongX is track 1. SongY is track 2…).
Songs have an individual price. Albums have a price that is cheaper than purchasing each song individually.
Users have names and email addresses.
Users make purchases of songs and albums.
Users make (ordered) playlists of songs.
Users can review (a score of 1-5) playlists or albums, but not songs. Reviews can also have a comment.

HW 1

Thu, 22 Oct 2015 07:00:00 -0500

HW1 on Relational Algebra and Basic SQL

HW is due 10/29 at 1:30 pm. All sections assume 6th edition of book.

Relational Algebra

Read: - 6.1.3.3 (Assignment Operator) - 6.1.4.2 (Aggregation Operator)

Exercises from book:

6.10
6.11
6.13
6.14

Basic SQL Exercises:

3.11
3.12
3.13
3.14
3.15
3.16
3.17

On SQL please: - use bold or UPPERCASE for keywords (i.e. SELECT FROM WHERE AVG) - use a newline after major keyword line (ie select from where groupby)

Example:

SELECT name
FROM people
WHERE age=22 AND state = 'IL'

Welcome and HW 0!

Sun, 27 Sep 2015 14:06:13 -0500

Welcome to Databases for Public Policy. Just as a quick note please by next class (10/1):

Email aelmore@cs.uchicago.edu with an email subject of “[CAPPDB] subscribe”; I will likely need to cancel and reschedule a class last minute in the upcoming weeks.

Update on due date

Read by 10/6 What Goes Around Comes Around by Stonebraker and Hellerstein

By next week (10/6):

Get Ubuntu 14.04+ running on bare metal or VM.
Have the ability to install open source databases (psql and others).
Install Java 1.7+ and refresh yourself on Java.
Install git. Setup a github account. Learn GIT