| | Type of alert | Definition |
| | User | Stores information related to the patient: user ID, name, user, age, gender, and password | | Contact | Stores data related to the patient’s direct contact: contact ID, user ID, name, relationship, cell phone, and e-mail | | Physician (caregiver) | This table contains personal physician’s (i.e., caregiver) information: physician ID, patient ID, name, user, e-mail, and password | | Message | Table storing information of identified alert messages: Message ID, user ID, time stamp of the alert message identification, and the sent message | | Readings | Stores information from identified abnormal readings: read ID, user ID, latitude, time stamp length of the reading, HR data, PA status, and SL of the patient |
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