Appendix B Attribute Type Storage Sizes
The storage size for each attribute type is listed in the following table.
| Type | Size |
|---|---|
| Boolean | 1 byte |
| Byte | 1 byte |
| Character | 1 byte for ANSI, 2 bytes for Unicode |
| Embedded binaries | Schema-defined size + 2 bytes |
| Embedded strings | Schema-defined size + 3 bytes |
| Embedded StringUtf8 | (Schema‑defined size x 4) + 2 bytes |
| Date | 4 bytes |
| Decimal | 3-12 bytes (depending on precision) |
| Integer | 4 bytes |
| Integer64 | 8 bytes |
| MemoryAddress | 12 bytes |
| Point | 8 bytes |
| Non‑embedded Binary Large Object (blob) | 8 bytes |
| Non‑embedded String Large Object (slob) | 8 bytes |
| Non‑embedded slob UTF8 | 8 bytes |
| Real | 8 bytes |
| Shared reference | 12 bytes |
| Time | 4 bytes |
| TimeStamp | 8 bytes |
| TimeStampInterval | 4 bytes |
| TimeStampOffset | 4 bytes |
Unbounded binary and string attributes (referred to as blobs and slobs) are stored externally to normal object records.
