data编程代做、SQL语言程序辅导

Database Systems Applications

Course Project 2022

1. Goal

? Build a 尊龙凯时官方网站database driven web application from the ground up.

? To develop the project, you are encouraged to use the Docker platform.

? If you wish, you may use any languages, tools, microservice architecture,

or web application frameworks, and run servers on your own machines or

cloud servers.

? Submit a report, together with your data and code.

2. Project Requirements

The project is to build a database driven web application. Specifically, you will

need to complete the following tasks over the course of this semester.

1) Pick your favorite data management application. It should be

relatively substantial, but not too enormous. Several project ideas are

described at the end of this document, but you are encouraged to come

up with your own. When picking an application, keep the following

questions in mind:

? How do you plan to acquire the data to populate your database?

Use of real datasets is highly recommended. You may use program

generated “fake” datasets if real ones are too difficult to obtain.

? How are you going to use the data? What kind of queries do you

want to ask?

? How is the data updated? Your application should support both

queries and updates

2) Design the database schema. Start with an E/R diagram and convert

it to a relational schema. Identify any constraints that hold in your

application domain, and code them as database constraints. If you plan

to work with real datasets, it is important to go over some samples of

real data to validate your design (in fact, you should start Task 7 below

as early as possible, in parallel to Tasks 3~6). Do not forget to apply

database design theory and check for redundancies.

3) Create a sample database using a small dataset. You may generate

this small dataset by hand. You will find this sample database very

useful in testing, because large datasets make debugging difficult. It is

a good idea to write some scripts to create/load/destroy the sample

database automatically? they will save you lots of typing when

debugging.

4) Design a web-based user interface for your application. Think

about how a typical user would use your application. Optionally, it might

be useful to build a “canned” demo version of the site first (i.e., with

hardcoded rather than dynamically generated responses), while you

brush up your application design skills at the same time. Do not spend

too much time on refining the look of your interface? you just need to

understand the basic “flow” in order to figure out what database

operations are needed in each step of the user interaction.

5) Write SQL queries that will supply dynamic contents for the web pages

you designed for Task 4. Also write SQL code that modifies the

database on behalf of the user. You may hardcode the query and

update parameters. Test these SQL statements in the sample database.

6) Choose an appropriate platform for your application. Python or

PHP? JavaScript or plain HTML? Start by implementing a “hello world”

type of simple database driven web application, deploy it in your

development environment, and make sure that all parts are working

together correctly.

7) Acquire the large “production” dataset, either by downloading it

from a real data source or by generating it using a program. Make sure

the dataset fits your schema. For real datasets, you might need to write

programs/scripts to transform them into a form that is appropriate for

loading into a database. For program generated datasets, make sure

they contain enough interesting “links” across rows of different tables,

or else all your join queries may return non-empty results.

8) Test the SQL statements you developed for Task 5 in the large

database. Do you run into any performance problems? Try creating

some additional indexes to improve performance.

9) Implement and debug the application and the web interface. Test

your application with the smaller sample database first. You may need

to iterate the design and implementation several times in order to

correct any unforeseen problems.

10) Test your application with the production dataset. Resolve any

performance problems.

11) Polish the web interface. You may add as many bells and whistles as

you like, though they are optional because they are not the main focus

of this course.

3. Milestone 1

You should have completed Tasks 1~5 and have started thinking about 6 and

7. If you plan to work with real data, you should also have made significant

progress on Task 7 (you should at least ensure that it is feasible to obtain the

real dataset, transform it, and load it into your database).

4. Milestone 2

You should have completed Tasks 1~8 and have made good progress on 9.

5. Project Demo

At the end of the semester, you will need to present a working demo of your

system. Prior to your demo, submit the following:

1) A final project report, including

? A brief description of your application.

? A plan for getting the data to populate your database, as well as

some sample data.

? A list of assumptions that you are making about the data being

modeled.

? An E/R diagram for your database design.

? A list of database tables with keys declared.

? A description of the Web interface. You can write a brief

description of how users interact with the interface (e.g., “the user

selects a car model from a pulldown menu, clicks on the ‘go’ button,

and a new page will display all cars of this model that are available

for sale”).

? A brief description of the platform you chose in Task 6.

? Changes you made to the database during performance tuning in

Task 8, e.g., additional indexes created.

2) A .zip or .tar.gz archive of your source code. The source code directory

should at least contain:

? A file describing how to create and load your sample database.

? Files containing the SQL code used for creating tables, constraints,

stored procedures and triggers (if any).

? A file test-sample.sql containing the SQL statements you wrote for

Task 5.

? A file test-sample.out showing the results of running testsample.sql over your sample database.

? If applicable, any code for downloading/scraping/transforming real

data that you have written for Task 7.

? A file describing how to generate the “production” dataset and load

it into your database. Do not submit the production dataset itself

through if it is too big? instead, submit the URL where you

download/scrape the raw data (if applicable), and the code that

extracts and transforms (or generates) the production dataset.

? A file test-production.sql containing the SQL statements you

wrote for Task 5. You may wish to modify some queries to return

only the top 10 result rows instead of all result rows (there might be

lots for large datasets).

? A file test-production.out showing the results of running testproduction.sql over the production dataset.

? All your source code.

? a README file describing how to set up your servers and database,

and how to compile and deploy your application.

6. Project Ideas

Below is a list of possible project ideas for which high quality datasets exist. Of

course, you are welcome to come up with your own.

Examples include those that allow visitors to explore information about movies,

music, sports, stocks, etc. There are already many commercial offerings for

such purposes. While there is less room for innovation, there are plenty of

examples of what a good web application would look like, as well as high quality,

well formatted datasets.

? IMDb Datasets (http://www.imdb.com/interfaces )?

? Sports Statistics (https://sports-statistics.com/sports-data/);

? Million Song Dataset (http://millionsongdataset.com/);

? Finance datasets available on data.world

(https://data.world/datasets/finance);

? Airbnb public datasets (http://insideairbnb.com/get-the-data.html);

? Tianchi Data Sets (https://tianchi.aliyun.com/dataset/);

? TPC-C benchmark (http://www.tpc.org/tpcc/);

? TPC-H benchmark (http://www.tpc.org/tpch/);

These projects are well suited for those who just want to learn how to build

database backed web applications as beginners. You can always spice things

up by adding features that you wish those websites had (e.g., different ways for

summarizing, exploring, and visualizing the data).

Your task would be to take one of such datasets, design a good relational schema,

clean up/restructure the data, and build a web application for the public to explore

the dataset.

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