Palm DateBook Archive file (.dba)

.dba file signature | application/octet-stream

PalmDesktop Calendar Archive

Safe

Magic Bytes

Offset 0


              00 01 42 44

Sources: Wikipedia, Gary Kessler

All Known Signatures

2 signature variants are documented for .dba files across multiple sources.

Hex Signature	Offset	Sources
00 01 42 44	0	Wikipedia, Gary Kessler
BE BA FE CA	0	Wikipedia

Extension

.dba

MIME Type

application/octet-stream

Byte Offset

Risk Level

Safe

Validation Code

How to validate .dba files in Python

Python

def is_dba(file_path: str) -> bool:
    """Check if file is a valid DBA by magic bytes."""
    signature = bytes([0x00, 0x01, 0x42, 0x44])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .dba files in Node.js

Node.js

function isDBA(buffer: Buffer): boolean {
  const signature = Buffer.from([0x00, 0x01, 0x42, 0x44]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .dba files in Go

func IsDBA(data []byte) bool {
    signature := []byte{0x00, 0x01, 0x42, 0x44}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

GET /api/v1/dba


              curl https://filesignature.org/api/v1/dba

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .dba file?

A .dba file is a Palm DateBook Archive file file. PalmDesktop Calendar Archive

What are the magic bytes for .dba files?

The magic bytes for Palm DateBook Archive file files are 00 01 42 44 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .dba file?

To validate a .dba file, read the first bytes of the file and compare them against the known magic bytes (00 01 42 44) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .dba files?

There is no officially registered MIME type for .dba files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .dba files?

Palm DateBook Archive file (.dba) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.