Answer:
Option (C) is the correct answer of this question.
Explanation:
Data Dictionary is an artificial or manual file that stores data product information and data aspects such as use, physical representation, ownership, authorisation, and protection.A Data dictionary is a hierarchical information repository. Metadata represents data.
- The database dictionary includes records of other information objects, such as data custody, data partnerships with other entities, and other documents.
- A vital component of any database engine is the Data dictionary.
Other options are incorrect because they are not follow the given scenario.
Answer:
Five variations od BLAST are as following:-
- BLASTP
- BLASTX
- TBLASTX
- BLASTN
- TBLASTN
Explanation:
BLASTP - Searches a protein database with a protein sequence.
BLASTX - This program searches protein database using a translated nucleotide sequence.
TBLASTX - Searches DNA databases using a protein query.
BLASTN -Searches a nucleotide sequence against DNA database.
TBLASTN - Searches nucleotide sequence to a DNA database.
The answer is Insert control B
ANSWER:
1)i. The relationship is a degree of 2 ( i.e Binary). The cardinality of the relationship is One-to-Many.
ii. The model is from piano description to piano manufacturer.
PIANO:
Model name
Model number
Serial number
Manufacturing completion date
MANUFACTURER:
Ebony and Ivory
2)i. The relationship is a degree of 2 ( i.e Binary). The cardinality of the relationship is Many-to-Many.
ii. The model is from piano description to Technician.
PIANO:
Model name
Model number
Serial number
Manufacturing completion date
TECHNICIAN
Employee number
Specialty
3)i. The relationship is a degree of 2 (i.e Binary). The cardinality of the relationship is Many-to-One.
ii. The model is from Technician to Technician
TECHNICIAN:
Lower rank
TECHNICIAN:
Higher rank
