Questiоns 5 thrоugh 9 relаte tо the following scenаrio. Suppose thаt you are asked to create an ER diagram for a real estate firm that lists properties for sale. The following rules describe the data requirements for this firm. The firm has a number of sales offices in several states. Attributes of a sales office include Office Number (identifier) and Location. Each sales office is assigned one or more employees. Attributes of employee include Employee ID (identifier) and Employee Name. An employee must be assigned to only one sales office. For each sales office, there is always one employee assigned to manage that office. An employee may manage only the sales office to which he or she is assigned. The firm lists properties for sale. Attributes of property include Property ID (identifier) and Location. Components of Location include City, State, and Zip Code. Each unit of property must be listed with one (and only one) of the sales offices. A sales office may have any number properties listed or may have no property listed. Each unit of property has one or more owners. Attributes of owners are Owner ID (identifier) and Owner Name. An owner owns one or more units of property. Attribute Percent Owned represents ownership percentage of a property by an owner. Assume that you drew the draft ER diagram for this real estate firm below. However, this solution is neither complete nor fully correct. Please answer the questions related to this draft solution. Consider the Is Assigned relationship between EMPLOYEE and SALES OFFICE entities. Which of the following cardinality notation contains an error related to this relationship?
Questiоns 5 thrоugh 9 relаte tо the following scenаrio. Suppose thаt you are asked to create an ER diagram for a real estate firm that lists properties for sale. The following rules describe the data requirements for this firm. The firm has a number of sales offices in several states. Attributes of a sales office include Office Number (identifier) and Location. Each sales office is assigned one or more employees. Attributes of employee include Employee ID (identifier) and Employee Name. An employee must be assigned to only one sales office. For each sales office, there is always one employee assigned to manage that office. An employee may manage only the sales office to which he or she is assigned. The firm lists properties for sale. Attributes of property include Property ID (identifier) and Location. Components of Location include City, State, and Zip Code. Each unit of property must be listed with one (and only one) of the sales offices. A sales office may have any number properties listed or may have no property listed. Each unit of property has one or more owners. Attributes of owners are Owner ID (identifier) and Owner Name. An owner owns one or more units of property. Attribute Percent Owned represents ownership percentage of a property by an owner. Assume that you drew the draft ER diagram for this real estate firm below. However, this solution is neither complete nor fully correct. Please answer the questions related to this draft solution. Which of the following actions is needed to fix the error related to the attribute named Percent Owned?