Oracle for Absolute Beginners: Part 8 – Database Design and Normalization. Table operates in fashion like a grid. Once you are ready with Tables now it the time to decide primary key for your tables. Excellent overview of important database design concepts and from a multi-platform perspective! For an example is a employee management system we required few tables like EMS_EmployeeDetails, EMS_Login, EMS_Feedback, EMS_Managers, EMS_Country or EMS_Salary. I learned a few things that had always been missing from my Db-knowledge about the utility of 'Views' and I think an absolute beginner would get even more out of this. Live the American dream! AmazonUIPageJS : P).load.js('https://images-na.ssl-images-amazon.com/images/I/017ShY1bOEL.js?AUIClients/GiftingDetailPageBuzzAssets'); Where represent the type of tables you required for your System. Using Foreign key relationship in Manager Details table you can insert only those records who are having emp_id. (window.AmazonUIPageJS ? Buzz us to publish your Story. .add-to-shopping-list-modal .atl-dropdown,.atl-dropdown-option,.truncate-to-one-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.add-to-shopping-list-modal{max-width:280px}.add-to-shopping-list-modal .atl-asin-title-max-height{max-height:3em}.add-to-shopping-list-modal .hide-overflow{overflow:hidden}.fresh #heroImageContainer #twister_feature_div{padding-top:1.8rem}.fresh #heroImageContainer #twister_feature_div .stacked-dimensions .dimension{margin-bottom:.5rem!important}.fresh #heroImageContainer #twister_feature_div .stacked-dimensions .dimension .dimension-info{padding-top:0;padding-bottom:0}.atfc-conflict-dialog{max-width:270px}.atfc-slot-conflict-dialog{max-width:330px}#availability_feature_div #fresh-exclusivity-info{padding-bottom:10px}#actionPanel.ap-fresh #ourprice_shippingmessage>span.a-size-base.a-color-base{display:inline-block}.mobile-fresh-price{padding-top:10px}#freshAddToCart #quantitySection 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#expandTitleToggle{background-image:url(https://m.media-amazon.com/images/G/01/AUIClients/FreshDetailPageMobileAssets-expand_icon_title_expander-d6d2d37d739af9e4c3f50ad296d056dec51d24f1._V2_.png)}#freshProductTitleGroup .unclamp #expandTitleToggle{background-image:url(https://m.media-amazon.com/images/G/01/AUIClients/FreshDetailPageMobileAssets-collapse_icon_title_expander-309bc5f11da90964d76ae1fd0ccc714f2979b181._V2_.png)}#fresh-add-on-details-link{color:#0066c0;font-size:1.1rem;line-height:1.5} Chapters 7-9 then take you through the steps of taking your data model and building these into normalised tables, deciding on your primary & foreign keys and setting up constraints. I've taken both formal classes and taught myself how to build websites (the latest formal class being an intro class on C# at local community college) but every class, book, and on-line course either skips over databases or gives you the "how to" of how to connect a database to your website. .list-item-image{height:3.5rem;width:3.5rem}.list-profile-image{height:3.5rem;width:3.5rem;overflow:hidden;border-radius:50%}.atwl-list-name{display:inline-block;max-width:13.5rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-left:3%}.atwl-list-name-expand{display:inline-block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-left:5px}.list-profile-image-column{vertical-align:baseline!important}.atwl-privacy{padding-left:.5rem;position:relative;display:inline-block;bottom:.5rem}#heart-background{background-color:#fff;opacity:.95;margin-bottom:.5rem;margin-left:.5rem;width:3.3rem;height:3.3rem;border-radius:3.3rem}.list-heart-sprite{float:left;display:inline-block;max-width:3rem}.list-heart{z-index:95;position:absolute;left:0;bottom:0;padding:1rem}.text-dark-sky-color{color:#00464F}#heart-list-name{color:#00464F;border-bottom:solid 2px #82D8E2;line-height:2.5rem}.heart-dropdown{margin-left:1rem;display:inline-block}.list-heart-underline{border-bottom:solid 2px #82D8E2}#heart-added-toast-contents,#heart-removed-toast-contents{float:left;padding-bottom:1rem;margin-left:4rem;display:inline-flex}.heart-toast-text{overflow:hidden;display:inline-block;text-overflow:ellipsis;white-space:nowrap}#heart,#heart-background,#unheart{position:absolute;left:0;bottom:0}.list-heart-sprite-simple{background-size:4.3rem 4.3rem;background-position:0rem 1.7rem;background-repeat:no-repeat;display:inline-block;position:absolute;left:0;bottom:0;max-width:6rem!important}.list-heart-simple{position:absolute;left:0;bottom:0}.list-heart .list-heart-state-saved{background-image:url(https://m.media-amazon.com/images/G/01/wishlist/heart_saved_mob_2x._CB454125771_.png);width:6rem;height:6rem}.list-heart .list-heart-state-save{background-image:url(https://m.media-amazon.com/images/G/01/wishlist/heart_save_mob_2x._CB464597060_.png);width:6rem;height:6rem}.heart-notification{background-color:#464646;position:fixed;left:0;bottom:-15%;z-index:9999;width:100%;height:4.5rem;font-size:1.2rem}.heart-notification-text{color:#fff;font-size:1.2rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:inline-block;max-width:100%} Record in 2020, nonetheless an interesting and amazing literature based portal of among! 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