I want collection named systems under which there is a document named sub_systems and under which there are three documents named high mid & low. And each high, mid and low contains separate multiple documents Like below
systems: {
sub_system_1 : {
high :{ {task1},
{task2},
.......
},
mid :{ {task1},
{task2},
.......
},
low :{ {task1},
{task2},
.......
},
},
sub_system_2 : {
high :{ {task1},
{task2},
.......
},
mid :{ {task1},
{task2},
.......
},
low :{ {task1},
{task2},
.......
},
},
............
}
So following are the questions I'm having
1. How will I create such nested document.
2. How will I insert new sub_system in the systems collection.
3. How will I insert new priority (high, mid, low) under sub_system document.
4. How will I insert new task in a specific sub_system and under a specific priority(high,low, mid) document
I want to know this using mongo shell and also with perl mongodb