(raw facts and figures) but because it is organised in a logical order the data becomes information that can be searched and used to create new information It consists of tables, forms, reports and queries
Application program interface (e.g. ODBC/JDBC) which allow SQL queries to be sent to a database * Main Contents Why use Databases? What is a Database? How to Perform Operations on a Database? Who uses Database? Database Users and Administrators ...
1. Inner Join INNER JOIN joins both the tables. This selects all rows from both the tables. This keyword will combine columns values of both the tables based on join predicate. Join predicate normally we can call the same column data in both tables like above both tables are having ‘Roll...
Here, the Employee_ID column has two rows with the same value, which breaks the fundamental rule of ensuring each employee is uniquely identified. If you allow the same ID twice, queries and updates can get tangled, especially when you try to figure out who belongs in Finance versus Sales....
OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries. -
In the above example the first ROW tag is from the main query. The last ROW tag is from the second query that is the summation of the Main query. How to keep the tags same as ROW query for both first and second query and how to nest this two queries in single execution to get th...
OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries. orientdb.dev Resources Readme License Ap...
OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text, Geospatial and Key-Value models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries. OrientDB Community Edition is Ope...
OrientDBis an Open Source Multi-ModelNoSQLDBMS with the support of Native Graphs, Documents Full-Text, Reactivity, Geo-Spatial and Object Oriented concepts. It's written in Java and it's amazingly fast: it can store 220,000 records per second on common hardware. No expensive run-time JOINs...
OrientDB is the first Multi-Model DBMS with Document & Graph engine. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing, Reactive Queries and has a small memory footprint. OrientDB is licensed with Apache 2 l