CISC215 Database Design and Application Development Management

CISC215 Database Design and Application Development Management

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CISC215 Database Design and Application Development

Question:

Below is a sequence of integer insertions and deletions for a 4-5 B-tree.

Part 1: Follow the sequence in order exactly please. Draw the resulting B-tree on a separate page After Each Step. Include the Three B-Trees as png images in your submission zip file.

Part 2: Answer the below questions about the B-tree you produce. Write your answers on this midterm document.

Deletion rules: we will use the same deletion rules as in the discussion guide

  • When deleting a key in an internal node, use the Successor as the replacement key
  • When borrowing, try the RIGHT SIBLING first if one exists

Read the below problem description and construct a UML class diagram that expresses the problem’s data model. You may use Viole[n]t or any other software to produce the class diagram. You many hand-draw but please make it 100% legible. Include a PNG image of your diagram in your submission zip file.

Your class diagram must contain the following:

  • Entities (i.e., classes) (there are at least 4 of them)
  • All characteristics of those entities (i.e., attributes or properties)
  • Relationships (just use Association arrow) between the entities including:
  • Cardinality between entities (be precise)
  • Use relationship labels as much as possible since it may help me understand your answer.

Your class diagram must not contain the following:

Problem Description

Our business sells properties to investors. Investors are required to buy at least one property from us at the time he/she becomes an investor. We don’t allow multiple investors to purchase the same property. When the property is purchased, we send them monthly bills until the property is paid off.

To become an investor, you must provide a full name, billing address, phone number, bank, bank account #, and email address. We also want to record the of properties purchased because for investors that purchase more than 20 properties, they join our mega investor club. Mega investors receive a discount % for future purchases and we like to keep track of when they became a mega investor.

We sell 3 kinds of properties: Residential, Commercial, and Vacant Land. All properties have a street address, city, state, and zip code. Residential properties have year built and square footage. Commercial properties have a commercial zone #. Vacant land has acreage.

When a property is purchased, we create at least one bill for that property based on how every many months they decide to pay it over. Every bill has a billed amount, tax, principle paid, and interest.

CISC215 Database Design and Application Development

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