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can u help me to create a sample of databases models, including heirarchical, relatioship, network and object oriented models. thank you

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Original request from asked for sample database models; correctly pointed out that useful help usually needs a draft to work from. Below are concise, practical notes to use directly in a comparison chart (definitions, when used, simple examples) and a tiny relational schema you can paste into a diagram tool.

Hierarchical model (Wikipedia) — tree of parent/child records. Good for strict one-to-many data (directory services, some legacy systems). Network model (Wikipedia) — graph of records with many-to-many sets; used historically for complex relationships in older enterprise systems. Relational model (Wikipedia) — data in tables with keys and joins; dominant for general-purpose OLTP and reporting. Object-oriented / object database (Wikipedia) — stores objects directly, useful when the app already models rich objects (CAD, complex simulations).

Things to show in the chart: structure (tree/table/graph/object), cardinality support (1:1, 1:N, M:N), schema flexibility, common use cases, examples of technologies, one-line pros/cons. Visual hints: draw hierarchical models as trees, relational as tables/ER boxes, network as nodes+edges, object DB as class boxes with methods/attributes.

Small sample relational schema (paste into a diagram to make an ER snippet):

Customers(CustomerID PK, Name, Email)
Orders(OrderID PK, OrderDate, CustomerID FK)
OrderItems(OrderItemID PK, OrderID FK, ProductID FK, Quantity)
Products(ProductID PK, Name, Price)

Note: many textbooks use “relationship” to mean the relational model; clarify that in the chart. For homework or feedback, include a draft diagram, a couple of sample rows, and one precise question — that makes targeted advice possible, as advised.

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Member Avatar for JorgeM

We don't do homework assignments. If you want help, provide info about what you have actually done and exactly what you are stuck on.

Member Avatar for ashrraine_25

oh sorry im just newbie here, we are making a chart about database models, and i really dont get it, i really stuck on it...any source bout it?..thnk you i wud really appraciate any help..

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