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Sometimes, when doing a project for a specific organization in a particular country, we need to convert it into the users' local timezone. In this article, we are going to learn how to convert a date to a user's local timezone using moment.js. Prerequisite Moment.js: Moment.js is a popular JavaScript library used for dealing with dates. This library is used to modify, parse, validate, manipulate, and display dates and times in JavaScript. MomentJS works with UTC (Coordinated Universal Time) by default or any other specific time zone. Install Moment.js: npm install moment ... Read More
A multi-dimensional array can be easily printed using java.util.Arrays.deepToString() in Java. This method converts the multi-dimensional array to string and prints the array contents enclosed in square brackets. What Are Multi-Dimensional Arrays? Multi-dimensional arrays allow you to store data in a matrix-like structure, providing a way to represent tables, grids, or more complex hierarchical data. The most common type is a two-dimensional array, but Java supports arrays with more than two dimensions. int[][] array = new int[rows][columns]; Using Naive Approach The Arrays.deepToString(arr) method from the Arrays class ... Read More
PL/SQL is a block-structured language that combines SQL's functionality with procedural commands. In this article, we will discuss a program in PL/SQL to reverse a given number for example −Input : 98765 Output : 56789 Explanation : reverse number of 98765 is 56789. Input : 56784 Output : 48765 Explanation Reverse number of ‘56784’ is ‘48765’.Approach to find The SolutionTake out the last digit from the number by finding the remainder of num/10.Now add the last digit to another variable reversed_num.Now check if num becomes 0 −If YES, then go to STEP1.If NO, then go to STEP4.Finally, print the ... Read More
SQL query is used to fetch data from the database. In some of the scenario you may need some perquisite data to call subsequent SQL query to fetch data from a table so instead of writing two seperate query we can write SQL query within the query. Therefore subQuery is a way to combine or join them in single query. Subqurey can have two types −Correlated subquery - In correlated subquery, inner query is dependent on the outer query. Outer query needs to be executed before inner queryNon-Correlated subquery - In non-correlated query inner query does not dependent on the outer ... Read More
The main constituent of any database is its tables, in order to make data accessibility custom there is concept of Views in other words we can say that with the help of Views of a table we can restrict any user to access only that data which is supposed to be accessed by him. Now on the basis of characteristic and features of the views we can distinguish between Views and Materialized Views. In this article, we will discuss the important differences between Views and Materialized Views in SQL. But before, let’s have look into the basics of views and ... Read More
Static SQLStatic SQL refers to those SQL statements which are fixed and can be hard coded into the application. As static sqls are fixed queries, these statements can be analyzed and optimized and do not require any specific handling for security purposes.Dynamic SQLDynamic SQL refers to those SQL statements which are generated dynamically based on user's input and run in the application. Dynamic Sqls helps to develop general and flexible applications. Dynamic SQL may need more permissions and security handling and a malicious user can create dangerous code as well.Following are some of the important differences between Static Routing and ... Read More
Embedded SQL Embedded SQL is a method that combines SQL with a high−level programming language's features. It enables programmers to put SQL statements right into the source code files used to set up an application. Database operations may be carried out effortlessly by developers by adding SQL statements to the application code. The source code files having embedded SQL statements should be preprocessed before compilation because of the issue of interpretation of SQL statements by the high−level programming languages in embedded SQL. The terms EXEC SQL and END_EXEC must be used before and after each SQL statement in the source ... Read More
Embedded SQL is a powerful method that allows the integration of high−level programming languages with database management systems (DBMS). It acts as a bridge between applications and databases which helps in data manipulation and communication. Various database management systems offer embedded SQL, giving developers the freedom to select the one that best serves their requirements. Popular DBMS that support Embedded SQL are Altibase, IBM Db2, Microsoft SQL Server, Mimer SQL, Oracle Database, PostgreSQL, and SAP Sybase. Need of Embedded SQL The goal to make database interactions simpler for application developers and end users determines the demand for embedded SQL. ... Read More
Structured Query Language (SQL) is a programming language. SQL is used to manage data stored in a relational database. SQL has the ability to nest queries. A nested query is a query within another query. A nested query allows for more complex and specific data retrieval. In this article, we will discuss nested queries in SQL, their syntax, and examples. Nested Query In SQL, a nested query involves a query that is placed within another query. The output of the inner query is used by the outer query. A nested query has two SELECT statements: one for the inner query ... Read More
Small businesses, due to their lack of cybersecurity resources, have become an easy target for cybercriminals. Start-ups in most of the cases have weak security measures, which leaves them vulnerable to ransomware, data breaches, and other online dangers. This increasing danger highlights how important it is for small businesses to recognize their risks and take preventative measures to safeguard their operations.Why Small Businesses are Prime Targets for Cyberattacks?In this section, I have listed down some of the prime reasons why small businesses become victims of cyberattacks - Absence of Strict Security MeasuresSmall businesses may have limited resources, making it difficult to ... Read More