Useful tips for everyday
How do you remove the last character of a string in Java? Java’s built-in method substring() of the class String is the most known way…
How do you create multiple relationships in access? Here are the steps to follow: Choose Relationships, Show Table (or click the Show Table button on…
How do you select without repeating values in SQL? SQL SELECT DISTINCT Explanation SELECT DISTINCT returns only unique (i.e. distinct) values. SELECT DISTINCT eliminates duplicate…
How can SQL Server improve Replication performance? Server and Network Set the minimum and maximum amount of memory allocated to Microsoft SQL Server Database Engine.…
What is the use of foreign key in MySQL? The foreign key is used to link one or more than one table together. It is…
How to break an existing single database file into? As you load data you can seed some known values into the tables at different places…
How do you undo a tablespace? Using CREATE DATABASE to Create an Undo Tablespace You can create a specific undo tablespace using the UNDO TABLESPACE…
How do you add a constraint in a table already created? The basic syntax of an ALTER TABLE command to ADD CHECK CONSTRAINT to a…
What encryption does MySQL use for passwords? The password hash stored by MySQL Server is generated by hashing the plain-text password twice using SHA1. When…
Does MongoDB support boolean? Boolean − This type is used to store a boolean (true/ false) value. Double − This type is used to store…