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ERD · Healthcare · Pharmacy

Inpatient medication administration database

This medication administration ER diagram models the core records needed for an inpatient electronic medication administration record. A patient can have an admission, and an admission can receive many medication orders. Each order identifies a formulary medication, dose, route, and status. Individual administration records capture the time, administering nurse, and result.

유형 ERD표준 Chen 1976 / Everest 1976 (crow's foot)엔진 schematex-erd업데이트됨 2026. 9. 22.
Medication administration
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요청 내용

“Draw an ER diagram for inpatient medication administration with Patient, Admission, Medication, MedicationOrder, and Administration tables. Orders must link to an admission and medication, and administrations must link to an order.”

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01

Admissions link patients to a unit and admission time.

02

Medication NDC is unique in the formulary table.

03

MedicationOrder carries dose, route, and status.

04

Administration records each dose time and nurse identifier.

05

One order can have many administrations.

This model supports a basic eMAR design. Production medication systems need clinician identity, verification, allergy, interaction, and audit controls.

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자주 묻는 질문

자주 묻는 질문

Why record each administration separately?

One order may result in multiple doses, each with its own time and outcome.

What is an NDC?

A National Drug Code identifies a specific drug product in the U.S.

Can a patient have several admissions?

Yes. The Patient-to-Admission relationship supports many stays over time.