{"id":1635,"date":"2019-08-06T10:03:17","date_gmt":"2019-08-06T10:03:17","guid":{"rendered":"https:\/\/www.testpreptraining.com\/tutorial\/?page_id=1635"},"modified":"2020-05-02T05:45:52","modified_gmt":"2020-05-02T05:45:52","slug":"introduction-to-aws-databases","status":"publish","type":"page","link":"https:\/\/www.testpreptraining.ai\/tutorial\/aws-sysops-administrator-associate\/introduction-to-aws-databases\/","title":{"rendered":"Introduction to AWS Databases"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"638\" height=\"359\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/08\/image025.jpg\" alt=\"\" class=\"wp-image-1636\"\/><\/figure>\n\n\n\n<p><strong>Relational <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Relational databases store data with pre-defined schema <\/li><li>relationships between them are defined<\/li><li>designed for supporting ACID transactions<\/li><li>maintaining referential integrity<\/li><li>maintain data consistency<\/li><li>Used for<ul><li>Traditional applications<\/li><\/ul><ul><li>ERP<\/li><\/ul><ul><li>CRM<\/li><\/ul><ul><li>e-commerce<\/li><\/ul><\/li><li>AWS Offerings<ul><li>Amazon Aurora<\/li><\/ul><ul><li>MySQL, PostgreSQL<\/li><\/ul><ul><li>Amazon RDS<\/li><\/ul><ul><li>MySQL, PostgreSQL, MariaDB, Oracle, SQL Server<\/li><li>Amazon Redshift <\/li><\/ul><\/li><\/ul>\n\n\n\n<p><strong>Key-value\ndatabses<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Optimized to store and retrieve key-value pairs <\/li><li>large data volumes with milliseconds retrieval<\/li><li>without the performance overhead <\/li><li>scale limitations of relational databases<\/li><li>Used for<ul><li>Internet-scale\napplications<\/li><\/ul><ul><li>real-time\nbidding<\/li><\/ul><ul><li>shopping\ncarts<\/li><\/ul><ul><li>customer\npreferences<\/li><\/ul><\/li><li>AWS Offering<ul><li>Amazon\nDynamoDB<\/li><\/ul><\/li><\/ul>\n\n\n\n<p><strong>Document\nDatabases<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Designed to store semi-structured data <\/li><li>Stores documents <\/li><li>Data is typically represented as a readable\ndocument<\/li><li>Used for<ul><li>Content\nmanagement<\/li><\/ul><ul><li>Personalization<\/li><\/ul><ul><li>mobile\napplications<\/li><\/ul><\/li><li>AWS Offering<ul><li>Amazon\nDocumentDB (with MongoDB compatibility)<\/li><\/ul><\/li><\/ul>\n\n\n\n<p><strong>In-memory\nDatabases<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Used for applications that require real time access to data. <\/li><li>By storing data directly in memory, microsecond latency is provided <\/li><li>Used for<ul><li>Caching<\/li><\/ul><ul><li>gaming leaderboards<\/li><\/ul><ul><li>real-time analytics<\/li><\/ul><\/li><li>AWS Offerings:<ul><li>Amazon ElastiCache for Redis<\/li><li>Amazon ElastiCache for Memcached<\/li><\/ul><\/li><\/ul>\n\n\n\n<p><strong>Graph Databases<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Used for applications needing to query and\nnavigate relationships between highly connected, graph datasets with\nmillisecond latency. <\/li><li>Used for<ul><li>Fraud\ndetection<\/li><\/ul><ul><li>social\nnetworking<\/li><\/ul><ul><li>&nbsp;recommendation engines<\/li><\/ul><\/li><li>AWS Offering<ul><li>Amazon\nNeptune<\/li><\/ul><\/li><\/ul>\n\n\n\n<p><strong>Time Series\nDatabases<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Used to efficiently <ul><li>Collect<\/li><\/ul><ul><li>Synthesize<\/li><\/ul><ul><li>derive\ninsights from enormous amounts of data <\/li><\/ul><\/li><\/ul>\n\n\n\n<p>that\nchanges over time (known as time-series data)<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Used for<ul><li>IoT\napplications<\/li><\/ul><ul><li>DevOps<\/li><\/ul><ul><li>industrial\ntelemetry<\/li><\/ul><\/li><li>AWS Offering:<ul><li>Amazon\nTimestream<\/li><\/ul><\/li><\/ul>\n\n\n\n<p><strong>Ledger Databases<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Used for a centralized, trusted authority to maintain a scalable, complete and cryptographically verifiable record of transactions. <\/li><li>Used for<ul><li>Systems of record<\/li><\/ul><ul><li>supply chain<\/li><\/ul><ul><li>registrations<\/li><\/ul><ul><li>banking transactions<\/li><\/ul><\/li><li>AWS Offering:<ul><li>Amazon Quantum Ledger Database (QLDB)<\/li><\/ul><\/li><\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Relational Relational databases store data with pre-defined schema relationships between them are defined designed for supporting ACID transactions maintaining referential integrity maintain data consistency Used for Traditional applications ERP CRM e-commerce AWS Offerings Amazon Aurora MySQL, PostgreSQL Amazon RDS MySQL, PostgreSQL, MariaDB, Oracle, SQL Server Amazon Redshift Key-value databses Optimized to store and retrieve key-value&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":383,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[7,216,217],"class_list":["post-1635","page","type-page","status-publish","hentry","category-amazon-aws","tag-aws","tag-aws-database","tag-time-series-database"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Introduction to AWS Databases - Testprep Training Tutorials<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.testpreptraining.ai\/tutorial\/aws-sysops-administrator-associate\/introduction-to-aws-databases\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" 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