lab 2 : data sockets https://drive.google.com/drive/folders/1Ghu-oV9atvNe3Dgrrm4C901wcdI8xUPD?usp=share_link the files necessary
lab 2 : data sockets https://drive.google.com/drive/folders/1Ghu-oV9atvNe3Dgrrm4C901wcdI8xUPD?usp=share_link the files necessary
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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lab 2 : data sockets
https://drive.google.com/drive/folders/1Ghu-oV9atvNe3Dgrrm4C901wcdI8xUPD?usp=share_link the files necessary
Transcribed Image Text:Process:
The user (client) requests data from the (server) database. The database sends back the data to the user. At acquisition of the data an XYPlot is drawn.
DataFile:
USAStates2020.csv
User Layer:
The user selects a country, and passes the country name to the Business Layer. Use TKinter to produce a UI for the user to select a country. Send the selected
country to the Business Layer.
Business Layer:
Receives the information from the User Layer and constructs a SQL query to send to the Data Layer. The query extracts the yearly data (1970,2020) for the
requested country. The data may be queried either country year-by-year or in one query for year range. After receiving the JSON string back from the Data
Layer, send the data to the Graphic Layer for plotting.
Data Layer:
Construct a SQL Database based on the data from the DataFile. Processes the queries from the Business Layer. Sends back a JSON string for the requested
query.
Graphic Layer:
Create a graphics class to plot the MatPlotLib XYPlot.
Server Layer:
The database access is controlled by the Server Socket. The client sends a query, and the server sends a JSON string.
Client Socket:
Requests data from the server. After receiving the data from the server, the client displays the data.
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In Python code:
Process:
The user (client) requests data from the (server) database. The database sends back the data to the user. At acquisition of the data an XYPlot is drawn.
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