Predefined Structures

Reserved Characters in Paths

In data paths, the following characters are reserved:

Characters	Purpose	Example
/	Reserved for path separator	/apps/afan/users
.	Reserved for rule configs and owner configs	{ .write: false, ...
*	Reserved for owner configs	{ "apps": { ".owner": { "owners": { "*": { ...
$	Reserved for path variables in rule configs	{ transfer: { $from: { $to: { $key: { value: { .write: ...
{, }	Reserved for variables in built-in function paths	/transfer/{from}/{to}/{key}/value
#, [, ], <ASCII control characters 0-31 or 127>	Reserved for other purposes in the future	-

Pre-defined Paths in Database

The following pre-defined paths are used in the blockchain database:

Path	Purpose
/accounts/$address/balance	Account balance
/accounts/$address/nonce	Account nonce
/apps	Applications
/consensus	Consensus
/checkin	Check-in
/deposit/$service_id/$address/$deposit_id	Deposit
/deposit_accounts/$service_id/$address/$account_id	Deposit accounts
/escrow	Escrow
/payments	Payment
/sharding	Sharding
/token/name	Token name
/token/symbol	Token symbol
/token/total_supply	Token total supply
/transfer/$from/$to/$key/value	Transfer
/withdraw/$service_id/$address/$withdraw_id	Withdraw

Owner configs and rule configs are stored in separate places in the database.