sarrvesh / MeerKAT_Sband_db

Template project with a mysql db and a dash-based frontend

MeerKAT S-band Survey Database

A dash-based frontend that interacts with a MySQL backend.

How to set up the MySQL database

1. Install MySQL using

   sudo apt install mysql-server

2. Secure your installation with

   sudo mysql_secure_installation

3. Enter MySQL with

   mysql -u root -p

4. Create a non-root account

   create user 'reader'@'localhost' identified by 'PASSWORD';

5. Create a database with

   CREATE DATABASE meerkat;

6. Create a table inside this database

   CREATE TABLE meerkat (name varchar(20), coordinates varchar(20), calibrator varchar(20), obs_date DATE, status varchar(20));

7. Give read and edit access to user reader

   GRANT SELECT, UPDATE ON meerkat.meerkat TO 'reader'@'localhost';

8. As root, you can add pointings to meerkat.meerkat with

   INSERT INTO meerkat(name, status) values('Point 3', 'None');

Columns in the meerkat.meerkat table

Column name	Description	MySQL type
name	Pointing name	varchar
coordinates	Coordinates (J2000)	varchar
calibrator	Calibrator name	varchar
obs_date	Observation date	date
status	Current status	varchar

How to add a new column to meerkat.meerkat

1. Login to MySQL as root.
2. Add the new column with USE meerkat; ALTER TABLE meerkat ADD COLUMN calibrator varchar(20) AFTER name;