Programming language

• Primary vs. Secondary Biological Databases:
• Primary (Archival) Databases: Store original, experimentally determined, direct sequence and structural submissions submitted directly by researchers.
• Examples: EMBL (European Molecular Biology Laboratory), GenBank (NCBI), DDBJ (DNA Data Bank of Japan), and PDB.
• Secondary (Derived) Databases: Store curated, processed, or value-added information derived from primary records:
• KEGG: Pathway and systems database.
• RefSeq: Curated, non-redundant reference sequence database.
• CATH: Protein domain classification database based on structural coordinates.
• Conclusion: The primary database is EMBL (Option 2).

Correct option: (2) EMBL

• Database Normalization and Modification Anomalies:
• In relational database design, unnormalized schemas suffer from severe update, insertion, and deletion anomalies due to data redundancy.
• Normal Forms (1NF, 2NF, 3NF, BCNF, 4NF, 5NF) decompose relations using functional and multivalued dependencies into progressively higher normal forms.
• This decomposition eliminates undesirable dependencies and prevents modification anomalies while preserving data integrity.
• Conclusion: Different classes of relations are created using Normal Forms (Option 4).

Correct option: (4) Normal Forms

• Data Communication Manager Architecture:
• Data Communication (DC) Manager (or Teleprocessing monitor) manages data transmission and remote terminal communication across a network.
• Statement a: Data Communication manager is a part of DBMS. $\implies$ Incorrect.
• The DC Manager is an independent communications software layer separate from the core Database Management System (DBMS).
• Statement b: Data Communication manager is an autonomous system in its own right. $\implies$ Correct.
• It operates as an autonomous system that interfaces with user terminals, network protocols, and queues transaction requests for the DBMS.
• Conclusion: Only b is correct (Option 2).