Course: Database Systems Discussion 1 (Chapter 3 – Course Textbook): Consider the ER diagram shown in Figure 3.22 for part of a BANK database (also below for reference). Each bank can have multiple


Course: Database Systems

Discussion 1 (Chapter 3 – Course Textbook):

Consider the ER diagram shown in Figure 3.22 for part of a BANK database (also below for reference). Each bank can have multiple branches, and each branch can have multiple accounts and loans.

(a) List the strong (nonweak) entity types in the ER diagram.

(b) Is there a weak entity type? If so, give its name, its partial key, and its identifying relationship.

(c) What constraints do the partial key and the identifying relationship of the weak entity type specify in this diagram?(

d) List the names of all relationship types, and specify the (min,max) constraint on each participation of an entity type in a relationship type. Justify your choices. 

Figure 3.22 (please check this ER Diagram in attached document)

 Discussion 2

Discussion 1 (Chapter 5):  Discuss the characteristics of relations that make them different from ordinary tables and files.

 Instructions:  

Your response to the initial question should be 350 words.  Next respond to two postings provided by your classmates. The first post should be made by Wednesday 11:59 p.m., EST. I am looking for active engagement in the discussion.  Please engage early and often. You are require to create your initial thread in order to view and respond to the threads posted by other students.  There must be at least one APA formatted reference (and APA in-text citation) to support the thoughts in the post as needed.  Do not use direct quotes, rather rephrase the author’s words and continue to use in-text citations.

Files:
diagram document.docx, DISCUSSION 1_ replies.docx, DISCUSSION 2_ replies.docx
Course: Database Systems Discussion 1 (Chapter 3 – Course Textbook): Consider the ER diagram shown in Figure 3.22 for part of a BANK database (also below for reference). Each bank can have multiple


Course: Database Systems

Discussion 1 (Chapter 3 – Course Textbook):

Consider the ER diagram shown in Figure 3.22 for part of a BANK database (also below for reference). Each bank can have multiple branches, and each branch can have multiple accounts and loans.

(a) List the strong (nonweak) entity types in the ER diagram.

(b) Is there a weak entity type? If so, give its name, its partial key, and its identifying relationship.

(c) What constraints do the partial key and the identifying relationship of the weak entity type specify in this diagram?(

d) List the names of all relationship types, and specify the (min,max) constraint on each participation of an entity type in a relationship type. Justify your choices. 

Figure 3.22 (please check this ER Diagram in attached document)

 Discussion 2

Discussion 1 (Chapter 5):  Discuss the characteristics of relations that make them different from ordinary tables and files.

 Instructions:  

Your response to the initial question should be 350 words.  Next respond to two postings provided by your classmates. The first post should be made by Wednesday 11:59 p.m., EST. I am looking for active engagement in the discussion.  Please engage early and often. You are require to create your initial thread in order to view and respond to the threads posted by other students.  There must be at least one APA formatted reference (and APA in-text citation) to support the thoughts in the post as needed.  Do not use direct quotes, rather rephrase the author’s words and continue to use in-text citations.

Files:
diagram document.docx, DISCUSSION 1_ replies.docx, DISCUSSION 2_ replies.docx

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