$ curl -O https://static.interviewcake.com/bakery_schema_and_data.sql && mysql.server start && mysql -u root Then run our script to set up theBAKERYdatabase and insert data: > source bakery_schema_and_data.sql; If you want to come back to the data again and you already downloaded ...
SQL stands for Structured Query Language , and it is used to communicate with the Database. This is a standard language used to perform tasks such as retrieval, updation, insertion and deletion of data from a database. 7. What is a unique key? A Unique key constraint uniquely identified e...
Structured Query Language is the main part of the relational database, which can be utilized for gaining access to the database and also plays a major role in the management of the database. On the other hand, MySQL is a Relational Database Management System like SQL Server, Informix, and...
Time-variant, meaning that the changes to the data in the database are tracked and recorded so that reports can be produced showing changes over time; Non-volatile, meaning that data in the database is never over-written or deleted, once committed, the data is static, read-only, but reta...
Frequently Asked SQL Interview Questions 1. What is a Database? Adatabase refers to a structured data collection that can be stored, managed, and retrieved from a remote or local computer system. Databases can become pretty complex and are built with a fixed design and modeling approach. ...
Following are some important Interview Questions for SQL : 1.What is SQL?Where SQL is used? Answer: SQL is Structured Query Language, which is a computer language for storing, manipulating and retrieving data stored in relational database.SQL can be used in different languages or database manag...
E.g. if you have a varchar2(1999) and put 50 bytes in the table, it will use 52 bytes. But when stored in a database, char always uses the maximum length and is blank-padded. E.g. if you have char(1999) and put 50 bytes in the table, it will consume 2000 bytes....
Server Interview's. I hope this book takes you to a better height and gives you extra confidence boost during Interviews. SQL Server is the database flagship of Microsoft. It's probably the only best database product when doing projects with windows and its rule the windows family like a ...
To help, I am providing a guide on PL/SQL interview questions. I will begin with the fundamental concepts and move forward to more advanced topics like bulk processing, dynamic SQL, and performance tuning. If you want to understand the foundational concepts of the Oracle database, I recommend...
Q. “model” system DB is down and we are trying to create a new database. Is it possible to create a new database when model DB is down? Ans: We can’t create a new database when model database is down. SQL Server restart will be unsuccessful when model database is down as TE...