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[Show more]Conceptual Data Modeling Process 1. Determine Requirements 2. Examine Business Rules 3. Build conceptual data model 
Requirements the needs, features, or conditions required for an information system and underlying data. 
ex. the system shall create and email an electronic receipt when a customer co...
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Add to cartConceptual Data Modeling Process 1. Determine Requirements 2. Examine Business Rules 3. Build conceptual data model 
Requirements the needs, features, or conditions required for an information system and underlying data. 
ex. the system shall create and email an electronic receipt when a customer co...
subjects = data entities, objects = descriptions Conceptual Modeling 
Subjects = ? Objects = ? 
Unique identifiers Conceptual Modeling 
unique characteristics that distinguish between objects/subjects of the same type 
attributes (describe each subject), alternate keys (describe each object) Concept...
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Add to cartsubjects = data entities, objects = descriptions Conceptual Modeling 
Subjects = ? Objects = ? 
Unique identifiers Conceptual Modeling 
unique characteristics that distinguish between objects/subjects of the same type 
attributes (describe each subject), alternate keys (describe each object) Concept...
What are relational database strengths? consistency, persistance, concurrency, standardization, application integration 
what are relational database shortcomings? impedance mismatch, scalability (horizontal vs vertical), clusters, cost 
what is big data? the data situation where volume, velocity, v...
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Add to cartWhat are relational database strengths? consistency, persistance, concurrency, standardization, application integration 
what are relational database shortcomings? impedance mismatch, scalability (horizontal vs vertical), clusters, cost 
what is big data? the data situation where volume, velocity, v...
File SystemVery simple method to compile information 
Advantages of file systemSimple, fast-processing, "legacy system" 
Disadvantages of file systemProgram data dependence, data duplication, limited file sharing 
DataMeaningful facts, text, graphics, images, videos etc. 
InformationData processed...
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Add to cartFile SystemVery simple method to compile information 
Advantages of file systemSimple, fast-processing, "legacy system" 
Disadvantages of file systemProgram data dependence, data duplication, limited file sharing 
DataMeaningful facts, text, graphics, images, videos etc. 
InformationData processed...
what is the purpose of physical db design? translate the logical description into technical specifications for storing and retrieving data 
what is the goal of physical db design? create a design for storing data that will provide: •Performance •Data Integrity •Data Security •Data Recoverabi...
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Add to cartwhat is the purpose of physical db design? translate the logical description into technical specifications for storing and retrieving data 
what is the goal of physical db design? create a design for storing data that will provide: •Performance •Data Integrity •Data Security •Data Recoverabi...
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