用戶可以選擇以個人用戶或機構用戶的身份訂閱本資料庫﹕
Individual and Institutional subscription available:

個人用戶將以登錄名稱及密碼進入本資料庫，同一名稱同時只能登入一次。

Individual subscribers will access the Database using Login Names and Passwords. Only one session is allowed concurrently using the same Login Name.

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機構用戶將以IP 位址或IP 區段進入本資料庫(例如61.40.39.1 - 61.40.39.254)，每機構最多能夠提供四個IP 區段，所有在該IP 區段內的電腦能同時進入本資料庫。

Institutional subscribers will access the Database using IP addresses or IP Domains (for example, 61.40.39.1 - 61.40.39.254). Each institution can provide up to 4 IP Domains and all computers within those domains can access the Database concurrently.