Entity Relation notation in text

Question

Is there a standard (non-graphical) notation for Entity Relationships?

right now I'm using my own janky notation:

• User >> Photo , (1-many)
• User > Profile , (1-1 hasOne)
• Profile < User , (1-1 belongsTo)
• Photo << User , (many-1 belongsTo)
• Photo <> Tag , (many-many)

Answer 1

Why not use the same than in ER-Diagramms:

• User 1-n Photos
• User 1-1 Profile
• Photo n-1 User

and so on. But I never heard of an official plaintext standart.