問24
頻出度★★☆
JAN コード中にデータとして組み込まれている情報はどれか。
平成22年度 春期 ITパスポート試験 問24
ストラテジ系法務 › 標準化関連
This question's explanation and your answers so far.
解説
問 24
- ア
正解 A JAN code is Japan's common product code, a barcode that conforms to the international standard (GS1/EAN). The standard 13-digit type is made up of a GS1 company prefix, an item code, and a one-digit check digit. The GS1 company prefix placed at the beginning follows the country code and uniquely identifies the company that supplies the product (its manufacturer or distributor). In other words, the digits of the JAN code themselves encode which company and which product, so the information embedded as data is ア, the product's manufacturer.
Incorrectイ
The manufacturing date is not included. A JAN code is a fixed identification code: the same product item is given the same number no matter when it was made. Information that changes at each point of production, such as the manufacturing date or the best-before date, is handled by a date marking separate from the JAN code, or by a barcode that carries more information, such as GS1-128.
Incorrectウ
The distribution channel is not included. A JAN code is an ID number attached to the product itself so that POS registers can identify it, and it does not hold the distribution history of which wholesalers or retail stores the product passed through. Tracking the route is managed on the side of a traceability mechanism that accumulates the scanned records.
Incorrectエ
The lot number is not included. A JAN code identifies a product only down to its type (item), and it cannot distinguish the same product by production lot or by individual unit. When a lot number or a serial number needs to be carried, a different form of encoding is used, such as GS1-128 with application identifiers or a two-dimensional code.
ここがポイント
- A JAN code (standard 13 digits) is made up of a GS1 company prefix, an item code, and a check digit. The leading company prefix indicates the manufacturing or selling company, the item code that follows indicates the type of product, and the last digit is a check digit for detecting reading errors.
- A JAN code is a static product identification code that expresses which company's product it is; it does not carry information about individual units or their history, such as the manufacturing date, lot number, or distribution channel. When such information is needed, another mechanism such as GS1-128 is used alongside it.
用語