Types

OrientDB supports several types natively. Below is the complete table.

#id	Type	Description	Java type	Minimum Maximum	Auto-conversion from/to
0	Boolean	Handles only the values True or False	java.lang.Boolean or boolean	0 1	String
1	Integer	32-bit signed Integers	java.lang.Integer or int	-2,147,483,648 +2,147,483,647	Any Number, String
2	Short	Small 16-bit signed integers	java.lang.Short or short	-32,768 32,767	Any Number, String
3	Long	Big 64-bit signed integers	java.lang.Long or long	-263 +263-1	Any Number, String
4	Float	Decimal numbers	java.lang.Float or float	2-149 (2-2-23)*2127	Any Number, String
5	Double	Decimal numbers with high precision	java.lang.Double or double	2-1074 (2-2-52)*21023	Any Number, String
6	Datetime	Any date with the precision up to milliseconds	java.util.Date	- 1002020303	Date, Long, String
7	String	Any string as alphanumeric sequence of chars	java.lang.String	- -	-
8	Binary	Can contain any value as byte array	byte[]	0 2,147,483,647	String
9	Embedded	The Record is contained inside the owner. The contained Record has no [[RecordId	Concepts#recordid]]	ORecord	- -
10	Embedded list	The Records are contained inside the owner. The contained records have no [[RecordIds	Concepts#recordid]] and are reachable only by navigating the owner record	List<Object>	0 41,000,000 items
11	Embedded set	The Records are contained inside the owner. The contained Records have no [[RecordId	Concepts#recordid]] and are reachable only by navigating the owner record	Set<Object>	0 41,000,000 items
12	Embedded map	The Records are contained inside the owner as values of the entries, while the keys can only be Strings. The contained ords e no [[RecordId	Concepts#recordid]]s and are reachable only by navigating the owner Record	Map<String, ORecord>	0 41,000,000 items
13	Link	Link to another Record. It's a common [[one-to-one relationship	Concepts#1-1-and-n-1-referenced-relationships]]	ORID, <? extends ORecord>	-
14	Link list	Links to other Records. It's a common [[one-to-many relationship	Concepts#1-n-and-n-m-embedded-relationships]] where only the [[RecordId	Concepts#recordid]]s are stored	List<? extends ORecord
15	Link set	Links to other Records. It's a common [[one-to-many relationship	Concepts#1-n-and-n-m-embedded-relationships]]	Set<? extends ORecord>	0 41,000,000 items
16	Link map	Links to other Records as value of the entries, while keys can only be Strings. It's a common [[One-to-Many Relationship	Concepts#1-n-and-n-m-embedded-relationships]]. Only the [[RecordId	Concepts#recordid]]s are stored	Map<String,     ? extends Record>
17	Byte	Single byte. Useful to store small 8-bit signed integers	java.lang.Byte or byte	-128 +127	Any Number, String
18	Transient	Any value not stored on database
19	Date	Any date as year, month and day	java.util.Date	--	Date, Long, String
20	Custom	used to store a custom type providing the marshall and unmarshall methods	OSerializableStream	0 X	-
21	Decimal	Decimal numbers without rounding	java.math.BigDecimal	? ?	Any Number, String
22	LinkBag	List of [[RecordId	Concepts#recordid]]s as spec [[RidBag	RidBag]]	ORidBag
23	Any	Not determinated type, used to specify Collections of mixed type, and null	-	-	-