christova

#testing #TypesOfTesting

1. Relational Databases (e.g., MySQL, Oracle, SQL Server): – Uses structured tables to store data. – Offers data integrity and complex querying capabilities. – Known for ACID compliance, ensuring reliable transactions. – Includes features like foreign keys and security control, making them ideal for applications needing consistent data relationships.

2. Document Databases (e.g., CouchDB, MongoDB): – Stores data as JSON documents, providing flexible schemas that can adapt to varying structures. – Popular for semi-structured or unstructured data. – Commonly used in content management and automated sharding for scalability.

3. In-Memory Databases (e.g., Apache Geode, Hazelcast): – Focuses on real-time data processing with low-latency and high-speed transactions. – Frequently used in scenarios like gaming applications and high-frequency trading where speed is critical.

4. Graph Databases (e.g., Neo4j, OrientDB): – Best for handling complex relationships and networks, such as social networks or knowledge graphs. – Features like pattern recognition and traversal make them suitable for analyzing connected data structures.

5. Time-Series Databases (e.g., Timescale, InfluxDB): – Optimized for temporal data, IoT data, and fast retrieval. – Ideal for applications requiring data compression and trend analysis over time, such as monitoring logs.

6. Spatial Databases (e.g., PostGIS, Oracle, Amazon Aurora): – Specializes in geographic data and location-based queries. – Commonly used for applications involving maps, GIS, and geospatial data analysis, including earth sciences.

#database

#RPandS #SystemDiagram #ARE

#UML #CheatSheet

#database #acid

#session #JWT #token #SSO #oauth

- HTTP (Hypertext Transfer Protocol): The foundation of data communication on the web, HTTP allows web pages to be requested and delivered across the internet.

- HTTPS (Hypertext Transfer Protocol Secure): An extension of HTTP, HTTPS adds a layer of security by encrypting data, making it safer for sensitive transactions online.

- FTP (File Transfer Protocol): A protocol used to transfer files between computers over a network, FTP is essential for managing and sharing large amounts of data.

- TCP (Transmission Control Protocol): Ensures that data sent over the internet arrives intact and in the correct order, making it reliable for most applications.

- IP (Internet Protocol): The addressing system for the internet, IP assigns unique addresses to devices, enabling them to be identified and communicate with each other.

- UDP (User Datagram Protocol): A faster but less reliable protocol compared to TCP, UDP is ideal for applications where speed is critical, like gaming and video streaming.

- SMTP (Simple Mail Transfer Protocol): The protocol responsible for sending emails across networks, ensuring messages reach their intended recipients.

- SSH (Secure Shell): A protocol that provides secure access to remote computers, widely used for system administration and secure data transfers.

- IMAP (Internet Message Access Protocol): Allows users to access and manage their email on a remote server, making it easier to sync messages across multiple devices.

• 1. add(E element) – Adds the specified element to the end of the list.
• 2. addAll(Collection<? extends E> c) – Adds all elements of the specified collection to the end of the list.
• 3. remove(Object o) – Removes the first occurrence of the specified element from the list.
• 4. remove(int index) – Removes the element at the specified position in the list.
• 5. get(int index) – Returns the element at the specified position in the list.
• 6. set(int index, E element) – Replaces the element at the specified position in the list with the specified element.
• 7. indexOf(Object o) – Returns the index of the first occurrence of the specified element in the list.
• 8. contains(Object o) – Returns true if the list contains the specified element.
• 9. size() – Returns the number of elements in the list.
• 10. isEmpty() – Returns true if the list contains no elements.
• 11. clear() – Removes all elements from the list.
• 12. toArray() – Returns an array containing all the elements in the list.
• 13. subList(int fromIndex, int toIndex) – Returns a view of the portion of the list between the specified fromIndex, inclusive, and toIndex, exclusive.
• 14. addAll(int index, Collection<? extends E> c) – Inserts all elements of the specified collection into the list, starting at the specified position.
• 15. iterator() – Returns an iterator over the elements in the list.
• 16. sort(Comparator<? super E> c) – Sorts the elements of the list according to the specified comparator.
• 17. replaceAll(UnaryOperator operator) – Replaces each element of the list with the result of applying the given operator.
• 18. forEach(Consumer<? super E> action) – Performs the given action for each element of the list until all elements have been processed or the action throws an exception.

#java #list #methods