NULL values are a common challenge in data management, especially when you need to query a database and perform calculations or comparisons. NULL means that a value is missing, unknown, or not ...

NULL values can affect the performance, accuracy, and integrity of your mySQLi database. For example, if you try to use arithmetic operators, aggregate functions, or string concatenation on NULL ...

In an OLTP relational database, it’s important to keep null values in place to ensure data integrity and the “real truth” of the data. However, unlike a transactional system, a data warehouse has more ...

When we don't define any data for a column then the column holds the null value. in mysql, null values are used to represent data that is missing.null valuesif you have created a table with optional ...

In database applications, a null object is a valid value for a field. This class differentiates between a null value (a null object) and an uninitialised value (the DBNull.Value instance).

It enters "null" into the database instead of null.. Expected: Null is entered into the database when the value passed into JSONB.valueOf is null.. The behavior is also a bit confusing since JSONB is ...

database, a NULL value means unknown, so any comparison or operation against a NULL value is also NULL, and any test that returns NULL is always ignored. For example, neither one of these ...

Most of the schema integration techniques add the dummy attributes in global table for missing attribute in local database which may result in this conflict. In this paper we discuss different cases ...