SQL Interview Questions for Freshers 1. What is the difference between a primary key and a unique key? Primary Key: The primary key is used to identify every record in a table uniquely. It ensures that NULL values are not present in the table. Unique Key: The unique key also identifies...
If you're walking into an SQL interview, you're bound to be asked about your prior experience with databases, and you should have a strong, compelling answer ready. To prepare for this question, think about the following: Have you used SQL at your jobs in the past? With which databases...
SQL Interview Questions for Freshers 1. What is the difference between a primary key and a unique key? Primary Key: The primary key is used to identify every record in a table uniquely. It ensures that NULL values are not present in the table. Unique Key: The unique key also identifies...
Spring Security Interview Questions Docker Interview Questions Python Interview Questions SQL Interview Questions Oracle Interview Questions Table of Contents Frequently Asked SQL Interview Questions 1. What is a Database? 2. What is a DataBase Management System (DBMS)? 3. What is Object-Relational ...
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...
SQL Joins questions asked in FAANG interviews are based on the types of SQL Joins and their applications. Besides core concepts, SQL Server interview questions are based on the position and required work experience. Here are some SQL Join interview questions and answers commonly asked in SQL tech...
To gain in-depth knowledge and be on par with practical experience,exploreSQL Server DBA Training. 8. SQL Server is not responding. What is an action plan? Ans:Connect using DAC via CMD or SSMS Connect via CMD SQLCMD -A –U my admin login –P password -SMyServer –master ...
金蝶软件常用基础SQL数据表 SQL数据库 1、系统表 t_tabledescription 2、字段表 t_fielddescription 3、基础资料表(版本:10.3) t_item 其中fitemclassid值表示 1-客户;2-部门;3-职员;4-商品;5-仓位;7-单位;8-供应商。
Prepare for SQL job interviews by practicing common SQL interview questions and problems. Be ready to demonstrate your SQL knowledge through practical tests and discussions. Highlight your projects and any relevant experience during the interview. By building a strong foundation, gaining practical experie...
If you experience long wait times with "row cache lock", the system may display the following log entries: "WAITED TOO LONG FOR A ROW CACHE ENQUEUE LOCK!".Null eventMeaning: Unspecific wait event Parameter: - Optimization steps:"Null event" is usually an idle event. There is therefore ...