PostgreSQL is a powerful, open source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.
As part of converting my Criminal Analysis Data Project code from R to Julia, I thought I would create a series of small posts detailing components of the translation process of data operations in smaller bits. This particular post will show a solution for how to take tabular data from a CSV and load it…
Exploring Mapping Data In a continuation from part 2a, this post will explore the spatial points datasets from my database. I need to assess what each dataset contains. To aid in the exploration of spatial data, I will demonstrate plotting spatial points. This can be a lot easier to look at this particular structure in…
Exploring Mapping Data My next exploration task is the mapping/geospatial tables in my database. I need to assess the what each dataset contains. To aid in the exploration of spatial data, I will demonstrate plotting of spatial points and polygons. This can be a lot easier to looking at this particular structure in tabular or…
Exploring Criminal Activity Data My primary data set to explore is the crime table in my database. I need to assess the values and consistency across each of the fields available in what was provided by the source. It is possible for data to be a little inconsistent across each of the years over the…
This post will describe the implementation of the star schema using the “Crime” table from my Criminal Analysis project. The original table represents criminal incidents in Washington DC from 2009 through 2020 (October). The table also has 23 columns, 7 of which are spatial grouping categories. I’ll demonstrate how to decompose the table of data…
pgAdmin is the leading Open Source management tool for Postgres, the world’s most advanced Open Source database. pgAdmin 4 is designed to meet the needs of both novice and experienced Postgres users alike, providing a powerful graphical interface that simplifies the creation, maintenance and use of database objects. https://www.pgadmin.org/docs/pgadmin4/4.28/index.html This post will describe how to…
This post will describe how to install both the PostgreSQL database and the PostGIS geodatabase extension. If you have been following my Criminal Analysis: Data Storage posts then this will be a repeat of information. Installing and Setting up PostgreSQL On a Linux machine, getting PostgreSQL installed and running is pretty easy and straight forward….
In this post I will go over setting up a geospatial database using PostGIS, an extension to PostgreSQL. For information about setting up a PostgreSQL database please refer back to my previous Data Storage. Below is the project plan to ensure I load up all my downloaded map data. Installing and Setting up First you…
Now that we have collected our data, lets work on building a database to store our project data. For this project I have decided to use a PostgreSQL database. The image below provides some planning details to help us implement the database. Installing and Setting up On a Linux machine, getting PostgreSQL installed and running…
