Add binary formats and SQLite database layouts.

Google's protocol buffers cannot be used for the inner portions of
signed/hashed objects.

This SQL database layout will facilitate a cache-based transaction
processing architecture that will scale to billions of accounts and dozens
of transactions per second.

SQLiteDatabases.sql

@@ -0,0 +1,95 @@
+
+
+CREATE TABLE Transactions (  -- trans in all state
+	Hanko		BLOB PRIMARY KEY,
+	NodeHash	BLOB,
+	Source		BLOB,
+	FromSeq		BIGINT UNSIGNED,
+	Dest		BLOB,
+	Ident		BIGINT,
+	SourceLedger	BIGINT UNSIGNED,
+	Signature	BLOB,
+	LedgerCommited	BIGINT UNSIGNED,	-- 0 if none
+	Status		VARCHAR(12) NOT NULL
+);
+
+CREATE INDEX TransactionHashSet -- needed to fetch hash groups
+ON Transactions(LedgerCommited, NodeHash);
+
+
+CREATE TABLE PubKeys ( -- holds pub keys for nodes and accounts
+	Hash		BLOB PRIMARY KEY,
+	PubKey		BLOB NOT NULL
+);
+
+
+CREATE TABLE AccountStatus ( -- holds balances and sequence numbers
+	Row		INTEGER PRIMARY KEY,
+	Hanko		BLOB,
+	Balance		BIGINT UNSIGNED,
+	Sequence	BIGINT UNSIGNED,
+	FirstLedger	BIGINT UNSIGNED,
+	LastLedger	BIGINT UNSIGNED		-- 2^60 if still valid
+);
+
+CREATE TABLE Ledgers ( -- closed ledgers
+	Hash		BLOB PRIMARY KEY,
+	LedgerSeq	BIGINT UNSIGNED,
+	FeeHeld		BIGINT UNSIGNED,
+	PrevHash	BLOB,
+	AccountHash	BLOB,
+	TrasactionHash	BLOB,
+	FullyStored	VARCHAR(1),
+	Status		VARCHAR(1)
+);
+
+
+CREATE TABLE LedgerHashNodes (
+	NodeID		BLOB,
+	LedgerSeq	BIGINT UNSIGNED,
+	Hashes		BLOB
+);
+
+CREATE TABLE TransactionHashNodes (
+	NodeID		BLOB,
+	LedgerSeq	BIGINT UNSIGNED,
+	Hashes		BLOB
+);
+
+
+CREATE TABLE LedgerConfirmations (
+	LedgerSeq	BIGINT UNSIGNED,
+	LedgerHash	BLOB,
+	Hanko		BLOB,
+	Signature	BLOB
+);
+
+CREATE TABLE TrustedNodes (
+	Hanko		BLOB PRIMARY KEY,
+	Trust		SMALLINT.
+	Comment		TEXT
+);
+
+CREATE TABLE KnownNodes (
+	Hanko		BLOB PRIMARY KEY,
+	LastSeen	TEXT,			-- YYYY-MM-DD HH:MM:SS.SSS
+	LastSigned	TEXT,
+	LastIP		BLOB,
+	LastPort	BIGINT UNSIGNED,
+	ContactObject	BLOB
+);
+
+CREATE TABLE ByHash (				-- used to synch nodes
+	Hash		BLOB PRIMARY KEY,
+	Type		VARCHAR(12) NOT NULL,
+	LedgerIndex	BIGINT UNSIGNED,	-- 2^60 if valid now, 0 if none
+	Object		BLOB
+);
+
+CREATE TABLE LocalAccounts (
+	Hash		BLOB PRIMARY KEY,
+	CurrentBalance	BIGINT UNSIGNED,
+	KeyFormat	TEXT,
+	PrivateKey	BLOB
+);
+