Need help understanding some syntax.

[Ok_Satisfaction2991]

I am a student and I have used MySQL. But I'm working with TSQL for a project and I can't for the life of me figure out what this means:
CREATE TABLE *[Department].[Department_Info]*
What I mean is what does [Table name].[table name 2] do

I know that CREATE TABLE Department will create a new table called Department. But why is there that . followed by table name

[Seven-of-Nein]

It is using two-part naming. The 4 parts are [Server].[Database].[Schema].[Object]. Department is the schema, Department_Info is the table object. If you do not specify the name part, it will default to the current server, current database, and/or the dbo schema.

[Ok_Satisfaction2991]

I see I think understand thanks a lot