mdb-reader/lib/node/JetFormat/Jet3Format.js

JavaScript library to read data from Access databases

import { GENERAL_97_SORT_ORDER } from "../SortOrder.js";
import { CodecType } from "./types.js";
export const jet3Format = {
    codecType: CodecType.JET,
    pageSize: 2048,
    textEncoding: "unknown",
    defaultSortOrder: GENERAL_97_SORT_ORDER,
    databaseDefinitionPage: {
        encryptedSize: 126,
        passwordSize: 20,
        creationDateOffset: null,
        defaultSortOrder: {
            offset: 0x3a, // 58
            size: 2,
        },
    },
    dataPage: {
        recordCountOffset: 8,
        record: {
            countOffset: 8,
            columnCountSize: 1,
            variableColumnCountSize: 1,
        },
    },
    tableDefinitionPage: {
        rowCountOffset: 12,
        columnCountOffset: 25,
        variableColumnCountOffset: 23,
        logicalIndexCountOffset: 27,
        realIndexCountOffset: 31,
        realIndexStartOffset: 43,
        realIndexEntrySize: 8,
        columnsDefinition: {
            typeOffset: 0,
            indexOffset: 1,
            variableIndexOffset: 3,
            flagsOffset: 13,
            fixedIndexOffset: 14,
            sizeOffset: 16,
            entrySize: 18,
        },
        columnNames: {
            nameLengthSize: 1,
        },
        usageMapOffset: 35,
    },
};