References Mallings 28 - in my SQL with innoDB how are the primary and secondary indexes created? a) primary indexes are automatically created for each primary key. Secondary indexes are created manually for the foreign keys. b) primary indexes are manually created for each primary keys. All the secondary indexes are created automatically. c) primary indexes are automatically created for primary key secondary indexes are created automatically for the foreign keys. d) Primary indexes are manually created for each primary key secondary index are men created manually for each foreign key.

References Mallings 28 - in my SQL with innoDB how are the primary and secondary indexes created? a) primary indexes are automatically created for each primary key. Secondary indexes are created manually for the foreign keys. b) primary indexes are manually created for each primary keys. All the secondary indexes are created automatically. c) primary indexes are automatically created for primary key secondary indexes are created automatically for the foreign keys. d) Primary indexes are manually created for each primary key secondary index are men created manually for each foreign key.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.

Question

e11] - Read-Only - Word
References
Mailings
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28 - in my SQL with innoDB how are the primary and secondary indexes created?
a) primary indexes are automatically created for each primary key. Secondary indexes are created
manually for the foreign keys.
b) primary indexes are manually created for each primary keys. All the secondary indexes are
created automatically.
c) primary indexes are automatically created for primary key secondary indexes are created
automatically for the foreign keys.
d) Primary indexes are manually created for each primary key secondary index are men created
manually for each foreign key.
structure while those without a
29 - in MYSQL with innoBD with the primary key however
primary key have a
structure.
a) Неар, sorted.
b) Sorted, heap.
c) Sorted, hash.
d) Cluster, heap
30 - what approach in a database administrator used to assess the effectiveness of indexes while
investigating slow queries?
a) Run EXPLAIN on queries
b) Change the primary key.
c) Inspect query logs.
d) Partition large tables
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