Megaladata File: Import Component
Use this component to import a table from a Megaladata (MGD) file.
Megaladata optimizes the .mgd proprietary file format for maximum read and write speed. The file stores field settings, which simplifies the import process.
Ports
Input
Control variables (optional port): Accepts variables that set configuration wizard parameter values.
Output
Dataset: Outputs the result table.
Configuration wizard
Specify or review the following parameters:
- File name: Enter the path to the file for a local connection, or the file name for a folder connection. Click
Select to open the file selection dialog. - Compression: Displays the compression method the system used when creating the MGD file:
- Bitness: Displays the bit depth of the source file: 64 or 32 bits.
- Checksum: Displays checksum information for file compression:
- Compressed data: The system records the checksum of compressed data after each block.
- Compressed and uncompressed data: The system records the checksum of compressed data after each block, and records the checksum of all uncompressed data at the end of the file.
- No: No checksum.
- Verify checksum: Select this checkbox to enable checksum verification when the file contains a checksum. This prevents silent data corruption and access violation errors if any process damages the file. Reading decreases in speed by 2% when the checksum covers compressed data only, and up to 7% when both checksum types are present. The system enables this option by default.
Read on: XML File: Import Component