Design a Relational Database by Mapping the following Entity-Relationship Diagram (ERD) into Relational Model. You must clearly determine the PK of each relation. Also, you should show the links between FKs and PKs in your answer. SName Owner SHIP_MOVEMENT PName N N HISTORY HOME PORT SHIP PORT Latitude (0,") VISITS (0.") Timestamp Longitude N (1.1) IN TYPE ON Date Time StartDate VISITS Type EndDate Tonnage SHIP TYPE Name STATE/COUNTRY Name SEA/OCEAN/LAKE Hull Continent

What are three signals that a surrogate key should be generated for the primary key of a relation instead of using the main key?

Develop an Entity Relationships Diagram (ERD) based on the relational schemas in the 3NF for the starting relational schema in un-normalized form presented below.   UNF:Order(OrderID, OrderDate, CustID, CustName, CustPhone, CCNum, CCExpDate, CCBank, BnkContName, BnkContPhone, CustEmail, OrderIP, SiteRefFrom, ShipStreet, ShipCity, ShipSt, ShipZip, OrderLineNum, ItemID, ItemName, ItemDesc, ItemQtyOrdered,ItemListPrice, ItemSalePrice, ItemQtyShip, ShipCharge, Tax, TotalDue)

Primary key identifies a unique tuple of a relation, true or false?

a) Complete the object conceptual data model for the following relational schema. Branch BranchID Location B001 Shatin ВО02 Homantin Order OrderID SalesTotal BranchID 0001 100 BO01 0002 200 BO02 0003 300 BO01 BranchID is the primary key of Branch table. OrderID is the primary key of Order table. BranchID in Order table is the foreign key references Branch table. Now, assume the OIDS are given below: Branch BranchID Location OID B001 Shatin OID1 B002 Homantin OID2 Order OrderID SalesTotal BranchID OID 0001 100 ВО01 OID3 0002 200 ВО02 OID4 0003 300 ВО01 OID5

Design an entity relationship diagram (ERD) for the following Solomon's  database:

What is the link between the main key of a relation and the functional connections between all of its attributes?

Convert to relation schema

By adding a time characteristic, a relation may be turned into a temporal relation, but will the functional linkages be preserved? How is this issue addressed in a database that tracks time periods?

Swing Jazz Club ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information.   Remember the ERD will eventually turn into the design for a database from a top down view.  Make sure you resolve any many to many conflicts.  Label an identifier or primary key and all pertinent attributes given.   If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity.  Therefore, all entities should end up with at least an identifier and another attribute that makes sense.  You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common.  Make sure you show entities, relationships, cardinality, and optionality.  Swing Jazz Club The Swing Jazz Club teaches swing and jazz dancing and offers both private and group lessons.  Swing Jazz charges $60 dollars per hour for a private lesson and $10 dollars per hour for a group lesson.…