in this chapter, we will discuss the different database methods in arangodb.

to start with, let us get the properties of the database −

• name
• id
• path

first, we invoke the arangosh. once, arangosh is invoked, we will list the databases we created so far −

we will use the following line of code to invoke arangosh −

127.0.0.1:8529@_system> db._databases()

output

[
   "_system",
   "song_collection"
]

we see two databases, one _system created by default, and the second song_collection that we have created.

let us now shift to song_collection database with the following line of code −

127.0.0.1:8529@_system> db._usedatabase("song_collection")

output

true
127.0.0.1:8529@song_collection>

we will explore the properties of our song_collection database.

to find the name

we will use the following line of code to find the name.

127.0.0.1:8529@song_collection> db._name()

output

song_collection

to find the id −

we will use the following line of code to find the id.

song_collection

output

4838

to find the path −

we will use the following line of code to find the path.

127.0.0.1:8529@song_collection> db._path()

output

/var/lib/arangodb3/databases/database-4838

let us now check if we are in the system database or not by using the following line of code −

127.0.0.1:8529@song_collection&t; db._issystem()

output

false

it means we are not in the system database (as we have created and shifted to the song_collection). the following screenshot will help you understand this.

to get a particular collection, say songs −

we will use the following line of code the get a particular collection.

127.0.0.1:8529@song_collection> db._collection("songs")

output

[arangocollection 4890, "songs" (type document, status loaded)]

the line of code returns a single collection.

let us move to the essentials of the database operations with our subsequent chapters.