ISO 10303-22:1998

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ISO 10303-22:1998, also known as the Standard Data Access Interface (SDAI), defines a standard way to access and manage product data within the STEP framework. It provides an Application Programming Interface (API) for interacting with data models, as defined in EXPRESS. Essentially, SDAI acts as an abstract layer, allowing different programming languages to interact with STEP data models in a consistent manner.