So, the primary key and clustered index are different objects of the SQL Server but as a best SQL practice, we commonly use them together. What is the result set of the following query? During the technical interview, we can face some query reading questions to understand our SQL query ...
This is THE book to turn to if you want to improve your SQL skills. I've been using SQL for 15 years and still found this book to be of great help. I was interviewing for a new position recently and had trouble answering some complicated questions on the spot. Every type of question...
Chapter 7 SQL: Data Definition Review Questions 7.1 Describe the eight base data types in SQL. The eight base types are: Boolean, character, bit (removed from SQL:2003), exact numeric, approximate numeric, datetime, interval, large object. See Section 7.1.2. ...
Exercise hints.You can take advantage of ready-made hints for every exercise, or ask questions and share insights with other members of our community through the Discuss tab. What Are the Requirements? A web browser Internet connection Understanding of basic SQL concepts presented in ourSQL Basics...
Schemas, Questions & Solutions for SQL Exercising Introduction The schemas and questions are [1] from WikibookSQL Exercises[https://en.wikibooks.org/wiki/SQL_Exercises]. Solutions are from both this Wikibook and me (exercise 1-8). I also added some questions by myself. ...
Basic SQL Questions 1. What are the types of SQL commands? SQL commands are grouped into the following categories: DDL (Data Definition Language): Commands like CREATE, ALTER and DROP that define or modify database structure. For example, creating a new table in a database involves a CREATE...
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No.Questions 1 What is a database? 1 What is DBMS? 1 What is SQL? 1 What is PL/SQL? 1 What is the difference between SQL and PL/SQL? 1 What is RDBMS? 1 What is a database table? 1 What is a query? 1 What is subquery? 1 What are the types of subquery?
Frequently Asked Questions How can i learn SQL Quickly? The answer to this question is completely subjective to the programming knowledge of a learner. If the learner is familiar with basic programming skills, he/she can master the fundamentals of SQL within a few days. However, to master ad...
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