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Ancestry database records information about family trees. Following information is recorded about each person:
FIRSTNAME first name
SURNAME surname
MNAME maiden name (if applicable)
DOB date of birth
BPLACE place of birth
DOD date of death (if applicable)
DPLACE place of death (if applicable)
SEX male/female
Spouse details:
Father details:
DOD date of death (if applicable) 3
DPLACE place of birth (if applicable)
Mother details:
Part B: Normal Forms
how many hourse have been spent on a certain project
External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Hot Backup: Some sites cannot terminate the database while creating a backup copy of the files. The cold backup is not a reliable option. So different kinds of backing up database
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
Give the reasons for allowing concurrency? The reasons for allowing concurrency is if the transactions run serially, a short transaction might have to wait for a preceding long
Write a short note on QBE? Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running da
Question: i) Explain the terms data warehousing and data mining. ii) Discuss the importance of the following security principles that a digital firm should amongst others, n
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu
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