Consider the following tables: CLINIC(CL_CODE, CL_NAME, CL_LOCATION, CL_PHONE) DOCTOR(DOC_CODE, DOC_LNAME, DOC_FNAME, DOC_OFFICE, CL_CODE) For the tables given above, work on the problems below: 1. For each table, identify the primary key. 2. For each table, identify the foreign key(s). 3. Identify at least one candidate key. If there are no candidate keys, give an example of an attribute that could be used as a candidate key. 4. For one of the tables, give examples of a superkey and a secondary key. 5. For the given tables, explain how entity integrity and referential integrity could be violated. Give specific examples. 6. Use Visio to create a detailed Crow\'s Foot ERD. The diagram must include all entities, attributes, and relationships. Primary keys and foreign keys must be clearly identified on the diagram. I need the specific answers for these quesitons including the last question diagram for visio, thanks Solution 1.) For clinic table clinic code is the primary key and for doctors table doctor code is the primary( key. 2.)In the context of relational databases, a foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table or the same table. In simpler words, the foreign key is defined in a second table, but it refers to the primary key in the first table.Therefore, CL_CODE which is used in doctor table is the foreign key. 3.)CL_CODE along with CL_LOCATION can be used as candidate key because by knowing location we can also determine other attributes. 4.)super key for clinic table (CL_CODE,CL_NAME,CL_LOCATION) , super key for doctor table DOC_CODE,DOC_FNAME,CL_CODE. 5.)Entity integrity is violated if primary key value is duplicated in any other row or if it is null.primary key for clinic table is CL_code and this will always be unique for each and every clinic and cannot be null.same for doctor table. Referential Integrity is the mechanism the system provides to maintain foreign keys. The definition of a foreign key must specify the table whose primary key is being referenced. Referential Integrity ensures only one property for foreign keys:.

1. Define how the HCI field of study relates to Graphical User Interface (GUI) design. Give three
examples
Solution
Human Computer Interaction (HCI) is still around, but it's a field of study, not a type of
interface.
The thing is "User Interface" implicitly includes humans and excludes machines; the interface
between machines tends to just be called an interface or API, and is pretty much excluded from
any UX related field. So non-human interfaces are implicitly outside the focus of user experience
etc. The skills for creating machine to machine interfaces are nothing like those for creating
human (or animal) interfaces with devices. So, HMI isn't really a term to worry about. I'd be
very surprised to hear someone using the phrase, and if they are, they really just mean UI as most
others would use it.
The distinction of a GUI is of course that it's explicitly graphical in nature. More implicitly, it
tends to refer to digital graphical interfaces for software. Physical hardware design, while it has a
visual component, is generally not considered part of a GUI. GUIs are made of pixels. They're
deeper than that (interactions, not just visual elements) but that's what generally differentiates
them.
The UI is anything the user interacts with. This includes physical and digital controls, anything
that a user will need to do, read, or interact with with part of the UI. "User" is intentionally
nebulous, but it's generally assumed to be your human agent. Interfaces for animals/etc do exist
(dog doors for example) but they're not really considered UI design but industrial design. Again,
not something one in a UX related field is likely to be concerned with.