An ORM library is written in our language of choice and encapsulates the code needed to manipulate the data. Therefore we don’t need to directly use the SQL; we can interact instantly with an object from our code, instead of a database table. The ORM tool translates the interaction into ...
This MySQL interview question can be tricky, especially when asked to make the query case-sensitive explicitly. 20. How to save images in MySQL? This is one of the most basic MySQL interview questions. Images can be stored in the MySQL database by converting them to BLOBS. But it is not...
Int m = st.executeUpdate(sql); If (m==1) System.out.println (“inserted successfully: “+sql); Else System.out.println (“insertion failed”); Q12. What is transaction processing in JDBC? Answer In JDBC, carrying out of all the sets of actions in one go is known as a transaction...
A DB query is a code written in order to get the information back from the database. Query can be designed in such a way that it matched with our expectation of the result set. Simply, a question to the Database.What is subquery?
- SQL module Q2. Which are the fundamental types of Joins used in Oracle to write subqueries? This is one of the most common Oracle interview questions for experienced professionals. The main types of Joins that are used to write subqueries in the Oracle database are: ...
Ace your interview with this comprehensive guide to data engineer interview questions, from HR screening to technical evaluations, including Python and SQL.
It is yet another important Flutter interview question to prepare for. 12. What is Scaffold widget in Flutter?Scaffold is a widget that provides a basic layout structure for your app. It is typically used as the top-level widget in your app and provides a number of useful features, ...
Some of the most popular RDBMS software are SQL Server, Oracle, PostgreSQL, SQLite, ThinkSQL, Cubrid.Reviewed and verified by Best Interview Question Best Interview Question With our 10+ experience in PHP, MySQL, React, Python & more our technical consulting firm has received the privilege of...
5. Create a query to learn the average cost of a service listed in a table. This is closer to a technical interview question, as it asks you to essentially write out a query. If the prompt is presented in this manner, you’ll usually need to provide a few details first. Then, you...
While preparing for the Python interview questions and answers for freshers, ensure to add this question to your list.A model in Django is a definite source of data information, as defined in “app/models.py.“Models operate as an abstraction layer, structuring and manipulating data. Django ...