B D, Author at Adglob Infosystem Pvt Ltd

H2 Database – Installation

Post author:B D
Post published:August 21, 2021
Post category:H2 Database
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H2 is a database written in Java. We can easily embed this database into our application by using JDBC. We can run this on many different platforms or any version…

H2 Database – Introduction

Post author:B D
Post published:August 21, 2021
Post category:H2 Database
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H2 is an open-source lightweight Java database. It can be embedded in Java applications or run in the client-server model. Mainly, the H2 database can be configured to run as…

H2 Database

Post author:B D
Post published:August 21, 2021
Post category:H2 Database
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H2 is an open-source lightweight Java database. It can be embedded in Java applications or run in the client-server model. H2 database can be configured to run as an in-memory…

HSQLDB – Indexes

Post author:B D
Post published:August 21, 2021
Post category:HSQLDB
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A database index is a data structure that improves the speed of operations in a table. Indexes can be created using one or more columns, providing the basis for both rapid random…

HSQLDB – Alter Command

Post author:B D
Post published:August 21, 2021
Post category:HSQLDB
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Whenever there is a need to change the name of a table or a field, change the order of fields, change the data type of fields, or any table structure,…

HSQLDB – Transactions

Post author:B D
Post published:August 21, 2021
Post category:HSQLDB
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A Transaction is a sequential group of database manipulation operations, which is performed and considered as one single work unit. In other words, when all the operations are successfully executed, only then…

HSQLDB – Regular Expressions

Post author:B D
Post published:August 21, 2021
Post category:HSQLDB
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HSQLDB supports some special symbols for pattern-matching operations based on regular expressions and the REGEXP operator. Following is the table of patterns, which can be used along with the REGEXP…

HSQLDB – Null Values

Post author:B D
Post published:August 21, 2021
Post category:HSQLDB
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SQL NULL is a term used to represent a missing value. A NULL value in a table is a value in a field that appears to be blank. Whenever we…

HSQLDB – Joins

Post author:B D
Post published:August 21, 2021
Post category:HSQLDB
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Whenever there is a requirement to retrieve data from multiple tables using a single query, you can use JOINS from RDBMS. You can use multiple tables in your single SQL…

HSQLDB – Sorting Results

Post author:B D
Post published:August 21, 2021
Post category:HSQLDB
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The SQL SELECT command fetches data from the HSQLDB table whenever there is a requirement that follows a particular order while retrieving and displaying records. In that case, we can…