covert the er diagram to a relational database schemaHomework Answers
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covert the er diagram to a relational database schema
The following ER diagram represents ships. Ships...
Map the ER diagram into a relational database schema. Describe each relation schema in parenthesized notation...
Map the ER diagram into a relational database schema. Describe each relation schema in parenthesized notation (not SQL) underlining the primary key. For each relation, describe any applicable integrity constraints, e.g., foreign key, referential integrity, not null, etc.
2. The following figure shows an ER schema for a database that can be used to...
The following figure shows an ER schema for a database that can be used to keep track of transport ships and their locations for maritime authorities. Map this schema into a relational schema and specify all primary keys and foreign keys. Use arrows to specify the relationships. Use descriptive names for foreign keys.
Using the relational Schema given below construct an ER diagram for the database worker (persNr, name,...
Using the relational Schema given below construct an ER diagram for the database worker (persNr, name, stationNr) station(stationNr, name) doctor (persNr, namke, sttionNr, expertise, degree) nurse (persNr, na,me, stationNr, skills) patient (patientNr, name, illness, roomNr, from, to) room (stationNr, roomNr, numbeds) treats (patientNr, persNr)
Accounting Info Systems A. True B. False 10. Tables in a relational database are documented by a data flow diagram. A. True B. False 11. In database design, the recommended step after ER Diagram...
Accounting Info Systems
A. True B. False 10. Tables in a relational database are documented by a data flow diagram. A. True B. False 11. In database design, the recommended step after ER Diagram is A. Relational schema B. Database implementation C. Either of the above D. None of the above The next 2 questions refer to binary relationships. 12. One to many ER have diagram will havetables in the relational schema. A. One B. Two C. Three D. More...
Part I. Mapping an (E)ER schema to a relational database schema (46 points) NOTE o Each...
Part I. Mapping an (E)ER schema to a relational database schema (46 points) NOTE o Each relation sachem should have a primary key (PK) when you answer. • To present the reference table of the foreign key (e.g., FK, FK1, K2), use an arrow. Do not use the relationship cardinality symbols of crow's foot notation in the relational database schema. o It is not required to specify the domain constraint (e.g., data type and length) of each attribute. 1. (12...
Question 30. Convert the ER diagram below to a relational schema using the conversion algorithm from...
Question 30. Convert the ER diagram below to a relational schema using the conversion algorithm from this unit. Show all of the steps in the algorithm. ER To Relational Conversion Algorithm Step 1: Each entity becomes a relation Step 2: Each many-to-many relationship becomes a relation Step 3: Each one-to-many relationship is represented by a foreign key Step 4: Write out the final relational schema Crazy Party Planning buys Nickname Address DUDE SNACK SnackName SnackDescription knows GuestName GUEST PhoneNumber invites
ER to Relational Mapping a) i) Reverse engineer the following schema to make an ER Diagram...
ER to Relational Mapping
a) i)
Reverse engineer the following schema to make an ER Diagram
A (),
B (),
C ()
B.a references A.a; C.ab references B.ab
ii)
EMP (,
ename, supervisor, Dno), DEP (,
dname)
EMP.Dno referencesDEP.Dno; EMP.supervisor references EMP.ssn
bold is underline.
3.1 (12) Transform the following ER diagram into a relational schema diagram. Semester Year Cno Title...
3.1 (12) Transform the following ER diagram into a relational schema diagram. Semester Year Cno Title SecNo Term --- ssn Name Course E belongs 0cl Section so Teaches Teacher
Database specialist please help asap detailed Q3. (1.5) You are given ER diagram. Transform ER diagram...
Database specialist please help asap detailed
Q3. (1.5) You are given ER diagram. Transform ER diagram in to relational schema. 고2 Wo WP ES BN. CL
2. The following figure shows an ER schema for a university database. a) Map this schema...
2. The following figure shows an ER schema for a university database. a) Map this schema into a relational schema b)Show the SQL statements needed to create the relations, using proper constraints. If your translation cannot capture any constraints in the ER diagram, explain why. COffice CName CPhone COLLEGE 0. 1 D Rank Office IName IPhone INSTRUCTOR D EAN (0.NO CStartDate (0.1) <ADMINS . CHIAR (1,1) EMPLOYS (MName FName LName (SName DOB DName Sid IO.NO Name Poate DEPT on H...
Accounting Info Systems
A. True B. False 10. Tables in a relational database are documented by a data flow diagram. A. True B. False 11. In database design, the recommended step after ER Diagram is A. Relational schema B. Database implementation C. Either of the above D. None of the above The next 2 questions refer to binary relationships. 12. One to many ER have diagram will havetables in the relational schema. A. One B. Two C. Three D. More...
Part I. Mapping an (E)ER schema to a relational database schema (46 points) NOTE o Each relation sachem should have a primary key (PK) when you answer. • To present the reference table of the foreign key (e.g., FK, FK1, K2), use an arrow. Do not use the relationship cardinality symbols of crow's foot notation in the relational database schema. o It is not required to specify the domain constraint (e.g., data type and length) of each attribute. 1. (12...
Question 30. Convert the ER diagram below to a relational schema using the conversion algorithm from this unit. Show all of the steps in the algorithm. ER To Relational Conversion Algorithm Step 1: Each entity becomes a relation Step 2: Each many-to-many relationship becomes a relation Step 3: Each one-to-many relationship is represented by a foreign key Step 4: Write out the final relational schema Crazy Party Planning buys Nickname Address DUDE SNACK SnackName SnackDescription knows GuestName GUEST PhoneNumber invites
ER to Relational Mapping
a) i)
Reverse engineer the following schema to make an ER Diagram
A (),
B (),
C ()
B.a references A.a; C.ab references B.ab
ii)
EMP (,
ename, supervisor, Dno), DEP (,
dname)
EMP.Dno referencesDEP.Dno; EMP.supervisor references EMP.ssn
bold is underline.
3.1 (12) Transform the following ER diagram into a relational schema diagram. Semester Year Cno Title SecNo Term --- ssn Name Course E belongs 0cl Section so Teaches Teacher
Database specialist please help asap detailed
Q3. (1.5) You are given ER diagram. Transform ER diagram in to relational schema. 고2 Wo WP ES BN. CL
2. The following figure shows an ER schema for a university database. a) Map this schema into a relational schema b)Show the SQL statements needed to create the relations, using proper constraints. If your translation cannot capture any constraints in the ER diagram, explain why. COffice CName CPhone COLLEGE 0. 1 D Rank Office IName IPhone INSTRUCTOR D EAN (0.NO CStartDate (0.1) <ADMINS . CHIAR (1,1) EMPLOYS (MName FName LName (SName DOB DName Sid IO.NO Name Poate DEPT on H...
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