Computers and Technology, 24.03.2020 19:47 pearlvldz

Convert your Conceptual model (Phase I) to a Logical model that can be implemented in a relational DBMS like Oracle. During this process you replace M-N relationships and multivalued attributes with constructs that can be implemented in the relational DBMS. Draw EER for the logical model after your modifications. Feel free to change your conceptual model (first delivery) if needed.

Answers: 2

Show answers

Answers

Answer from: amandapill

Converting conceptual model to logical model is described below.

Explanation:

The main aim of this model is to establish the entities, their attributes, and their relationships. In this Data modeling level, there is hardly any detail available of the actual Database structure.

The 3 basic tenants of Data Model are

Entity: A real-world thing Attribute: Characteristics or properties of an entity Relationship: Dependency or association between two entities

For example:

Customer and Product are two entities. Customer number and name are attributes of the Customer entity Product name and price are attributes of product entity Sale is the relationship between the customer and product

Characteristics of a conceptual data model

Offers Organisation-wide coverage of the business concepts. This type of Data Models are designed and developed for a business audience. The conceptual model is developed independently of hardware specifications like data storage capacity, location or software specifications like DBMS vendor and technology. The focus is to represent data as a user will see it in the "real world." Conceptual data models known as Domain models create a common vocabulary for all stakeholders by establishing basic concepts and scope.

Logical Data Model

Logical data models add further information to the conceptual model elements. It defines the structure of the data elements and set the relationships between them.

The advantage of the Logical data model is to provide a foundation to form the base for the Physical model. However, the modeling structure remains generic. At this Data Modeling level, no primary or secondary key is defined. At this Data modeling level, you need to verify and adjust the connector details that were set earlier for relationships.

Characteristics of a Logical data model

Describes data needs for a single project but could integrate with other logical data models based on the scope of the project. Designed and developed independently from the DBMS. Data attributes will have datatypes with exact precisions and length. Normalization processes to the model is applied typically till 3NF.

Answer from: Quest

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.

Answer from: Quest

Add the sound quality with x flip file then download winrar pick 65 gig don't mess up go to settings and reset them download nodding pack 13 file x9691728 is good to buy winrar is good extract x9691728 then keep it take it to storm movable property and boom

Another question on Computers and Technology

Computers and Technology, 21.06.2019 22:30

Aprovides legal protection for something an individual has created

Answers: 1

Answer

Computers and Technology, 22.06.2019 22:40

In this lab, you complete a python program that calculates an employee's annual bonus. input is an employee's first name, last name, salary, and numeric performance rating. if the rating is 1, 2, or 3, the bonus rate used is .25, .15, or .1 respectively. if the rating is 4 or higher, the rate is 0. the employee bonus is calculated by multiplying the bonus rate by the annual salary.

Answers: 1

Answer

Computers and Technology, 23.06.2019 12:00

Which of these is an example of an integrated presentation? a. a table created in powerpoint b. an image pasted into powerpoint c. a caption created in powerpoint d. an excel chart pasted into powerpoint

Answers: 1

Answer

Computers and Technology, 24.06.2019 07:20

Ingrid started speaking about her slide presentation. when she clicked to th"third slide, which had just a picture of an elephant, she forgot what she wassupposed to talk about. what could ingrid do to avoid this situation in thefuture? oa. print handouts for her audience.ob. add presenter's notes to each slide.oc. add a video to each slide.od. save her slide presentation to a flash drive

Answers: 2

Answer

You know the right answer?

Convert your Conceptual model (Phase I) to a Logical model that can be implemented in a relational D...

Questions