DBMS Concepts Quick Quiz

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Core DBMS topics (10 Qs)

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DBMS Concepts Quick Quiz


DBMS Concepts Quick QuizVersión en línea Core DBMS topics (10 Qs) por PREETHIKA 1 Which normalization removes transitive dependency? a 1NF b BCNF c 2NF d 3NF 2 Which component handles transaction consistency? a Query Processor b Buffer Manager c Transaction Manager d File Manager 3 In hashing, collisions are handled using: a Indexing b Chaining c Compression d Sorting 4 Which join eliminates duplicate columns automatically? a Equi Join b Natural Join c Outer Join d Theta Join 5 Which property ensures 'all or nothing'? a Isolation b Consistency c Durability d Atomicity 6 Which index type stores every record pointer? a Secondary b Primary c Dense d Sparse 7 Which query optimization method uses rules instead of cost? a Logical b Cost-based c Physical d Heuristic-based 8 Which normal form removes partial dependency? a 4NF b 2NF c 1NF d 3NF 9 Which file organization gives O(1) access? a Sequential b Indexed c Hashing d Heap 10 Which schedule ensures same result as serial execution? a Non-serial b Cascading c Serializable d Strict 11 Which key uniquely identifies a record? a Foreign key b Super key c Primary key d Candidate key 12 Which algebra operation combines relations? a Union b Projection c Rename d Selection 13 Which level shows user view? a Internal b Physical c External d Conceptual 14 Which tree stores data in leaf nodes? a B+ tree b Binary tree c B-tree d AVL tree 15 Which query type is non-procedural? a Relational Calculus b DDL c SQL d Relational Algebra 16 Which schedule is always safe? a Dirty b Cascading c Non-serial d Serializable 17 Which dependency causes redundancy? a Partial dependency b Functional c Domain d Join dependency 18 Which join keeps unmatched rows? a Equi join b Inner join c Natural join d Outer join 19 Which protocol prevents cascading rollback? a Basic 2PL b MVCC c Strict 2PL d Timestamp 20 Which operation removes rows? a Difference b Projection c Selection d Join 21 Which memory stores DB permanently? a Cache b Register c RAM d Disk storage 22 Which model uses graph structure? a Hierarchical b Flat c Network d Relational 23 Which constraint ensures valid data? a Key constraint b Referential c Domain constraint d Integrity constraint 24 Which query stage selects best plan? a Execution b Compilation c Parsing d Optimization 25 Which property avoids dirty reads? a Consistency b Durability c Atomicity d Isolation 26 BCNF requires: a All LHS must be super key b Atomic values c No transitive dependency d No join 27 Which is procedural language? a TRC b Relational Algebra c DRC d SQL 28 Which structure speeds up retrieval? a Block b File c Index d Heap 29 Which causes deadlock? a Sorting b Indexing c Atomicity d Circular wait 30 Which is used in hashing collisions? a Partition b Compression c Chaining d Sorting 31 Which join uses a condition (not natural or cross)? a Theta join b Natural join c Outer join d Cross join 32 Which is a super key? a Attribute b Foreign key c Minimal key d Unique identifier set 33 Which form removes a multi-valued dependency? a 3NF b 5NF c 4NF d BCNF 34 Which process converts SQL to algebra? a Storage b Parsing c Optimization d Execution 35 Which ensures rollback? a COMMIT b ROLLBACK c INSERT d SAVEPOINT 36 Which file type is unordered? a Heap b Indexed c Sorted d Cluster 37 Which operation selects columns? a σ (sigma) b ∪ (union) c × (cross) d π (pi) 38 Which ensures consistency after crash? a Recovery b Locking c Sorting d Indexing 39 Which is not an ACID property? a Atomicity b Consistency c Isolation d Availability 40 Which uses timestamps? a Timestamp protocol b MVCC c 2PL d Locking

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DBMS Concepts Quick QuizVersión en línea

por PREETHIKA

Which normalization removes transitive dependency?

Which component handles transaction consistency?

In hashing, collisions are handled using:

Which join eliminates duplicate columns automatically?

Which property ensures 'all or nothing'?

Which index type stores every record pointer?

Which query optimization method uses rules instead of cost?

Which normal form removes partial dependency?

Which file organization gives O(1) access?

Which schedule ensures same result as serial execution?

Which key uniquely identifies a record?

Which algebra operation combines relations?

Which level shows user view?

Which tree stores data in leaf nodes?

Which query type is non-procedural?

Which schedule is always safe?

Which dependency causes redundancy?

Which join keeps unmatched rows?

Which protocol prevents cascading rollback?

Which operation removes rows?

Which memory stores DB permanently?

Which model uses graph structure?

Which constraint ensures valid data?

Which query stage selects best plan?

Which property avoids dirty reads?

BCNF requires:

Which is procedural language?

Which structure speeds up retrieval?

Which causes deadlock?

Which is used in hashing collisions?

Which join uses a condition (not natural or cross)?

Which is a super key?

Which form removes a multi-valued dependency?

Which process converts SQL to algebra?

Which ensures rollback?

Which file type is unordered?

Which operation selects columns?

Which ensures consistency after crash?

Which is not an ACID property?

Which uses timestamps?