NoSQL database for relational data structure

Question

I'm creating a photo gallery SPA with angularJS (front & back) and nodejs (server). I'm asking myself which type of database I should use to store the gallery/photo knowing :

• I'll have two main classes : Photo and Gallery
• A Gallery will contain either another Gallery or a Photo (infinite stacking of gallery possible in theory ...)
• Easy data manipulation, for example, I need the ability to move a photo / gallery to another Gallery easily, or a full branch (move a tree of 4 nested gallery to another one)

related SQL structure:

Photo (photo_id, title, filename, gallery_id) //gallery_id is a foreign key to Gallery table
Gallery (gallery_id, title, parent_id) //parent_id is NULL when no parent (root gallery)

This data structure is quite simple but relational, so using a SQL database like postgresql with NodeJS would be OK.

How would you structure that with a noSQL databases like mongoDB ? (maybe with my relational structure data it's totally out of the question ?)

Is it a case where traditional relational SQL databases is preferable ?

Thanks

Answer 1

使用mongoDB来保留嵌套结构，因为它将启用索引到n级并也允许对那些索引进行查询。

Answer 2

Here is the example to insert a record into a collection called photogallery. You need not have to pre-create collection.

db.photogallery.insert(
{
 photo_id: "1",
 phototitle: "phototitle",
 filename: "filename",
 gallery: {
    gallerytitle: "gallerytitle",
    parentgallery: "parentgallery"
 }
}
)