what is foreign keya relation schema r1 derived
What is foreign key?
A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a foreign key from r1 referencing r2.
Expected delivery within 24 Hours
explain the effect of cutting speedincrease in cutting speed improves the surface finish due to the continuous reduction in built up edge the curve a
define query languagea query is a statement requesting the retrieval of information the portion of dml that includes information retrieval is known
write short notes on schema diagrama database schema along with primary key and foreign key dependencies can be depicted pictorially by schema
q what is the clitellum of earthtworms and where it is locatedthe clitellum is a special region of the annelid constituted by rings metameres with
what is foreign keya relation schema r1 derived from an er schema may contain among its attributes the primary key of another relation schema r2this
q concerning the occurrence of separated sexes how are the beings of the phylum annelida classifiedthese beings may be dioecious the majority of
q is the embryonic development in earthworms indirect or directthe embryonic development is direct because in earthworms there is no larval stageq
q what is the ecological role of earthwormsearthworms have an important ecological role as they eat decomposing organic material they also dig
q into which classes is the phylum annelida dividedthe phylum is divided into three classes hirudineans eg leeches oligochaetes for example
1935521
Questions Asked
3,689
Active Tutors
1449454
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Identify the steps salespeople should take to avoid trust-destroying conflicts with customers. (Check all that apply.)
Question: What are the two medically significant genera of bacteria that produce endospores? What is an endospore?
What are your thoughts about leaders needing to be bicultural in order to be effective with bicultural clients?
Explain the assessment process for the forensic psychologist when an officer candidate is being evaluated as a new hire,
After mastectomy, the client will undergo external radiation. Which of the following client's statements indicates that she DOES NOT understand
The diagram illustrates the business processes at an organization. Assuming that these processes are automated (even those labeled manual),
Question: What is a limitation to virtue ethics? From your understanding name the biggest obstacle that virtue ethics raises?