{"id":470,"date":"2021-04-01T13:18:43","date_gmt":"2021-04-01T11:18:43","guid":{"rendered":"http:\/\/vita.sk.vps202.nameserver.sk\/?post_type=product&#038;p=470"},"modified":"2026-02-17T11:57:34","modified_gmt":"2026-02-17T10:57:34","slug":"online-kurz-sql-ii-mierne-pokrocily","status":"publish","type":"product","link":"https:\/\/www.vita.sk\/en\/online-kurz-sql-ii-mierne-pokrocily\/","title":{"rendered":"Online kurz SQL II. Mierne Pokro\u010dil\u00fd"},"content":{"rendered":"<p>Online kurz SQL II. Mierne Pokro\u010dil\u00fd je pre v\u00e1s ide\u00e1lny, ak sa chcete nau\u010di\u0165 pracova\u0165 s pokro\u010dil\u00fdmi SQL dopytmi, optimalizova\u0165 v\u00fdkon datab\u00e1z a navrhova\u0165 bezpe\u010dn\u00e9 rela\u010dn\u00e9 datab\u00e1zov\u00e9 rie\u0161enia v praxi. <strong>Ide o akreditovan\u00fd a certifikovan\u00fd kurz na SQL<\/strong>. V tomto kurze si preh\u013abite porozumenie rozdielom medzi rela\u010dn\u00fdmi a nerela\u010dn\u00fdmi datab\u00e1zami a osvoj\u00edte si princ\u00edpy fungovania SQL datab\u00e1z vr\u00e1tane pr\u00e1ce so sch\u00e9mami a datab\u00e1zovou architekt\u00farou. Nau\u010d\u00edte sa efekt\u00edvne pou\u017e\u00edva\u0165 poddopyty a vnoren\u00e9 dopyty, pochop\u00edte ich typick\u00e9 scen\u00e1re vyu\u017eitia a zvl\u00e1dnete filtrovanie d\u00e1t pomocou oper\u00e1torov IN, LIKE a BETWEEN v kombin\u00e1cii s komplexn\u00fdmi podmienkami. Z\u00edskate schopnos\u0165 importova\u0165 a spracov\u00e1va\u0165 d\u00e1ta z CSV s\u00faborov, transformova\u0165 ich a pripravova\u0165 na \u010fal\u0161ie analytick\u00e9 spracovanie. Osvoj\u00edte si pr\u00e1cu so SQL spojeniami vr\u00e1tane INNER JOIN, LEFT JOIN a RIGHT JOIN a pochop\u00edte v\u00fdznam prim\u00e1rnych a cudz\u00edch k\u013e\u00fa\u010dov pri vytv\u00e1ran\u00ed rela\u010dn\u00fdch v\u00e4zieb medzi tabu\u013ekami. Nau\u010d\u00edte sa vytv\u00e1ra\u0165 a pou\u017e\u00edva\u0165 indexy, rozli\u0161ova\u0165 typy indexov a optimalizova\u0165 v\u00fdkon datab\u00e1zy pomocou spr\u00e1vne navrhnutej \u0161trukt\u00fary tabuliek a indexovania. Kurz v\u00e1s nau\u010d\u00ed pou\u017e\u00edva\u0165 vstavan\u00e9 SQL funkcie ako ABS, FLOOR, ROUND, TRIM, REPLACE \u010di oper\u00e1tor LIKE, pracova\u0165 s ASCII hodnotami a realizova\u0165 pretypovanie d\u00e1t. Zvl\u00e1dnete modelovanie datab\u00e1z pomocou ERD diagramov a pochop\u00edte princ\u00edpy n\u00e1vrhu datab\u00e1zovej \u0161trukt\u00fary v s\u00falade s rela\u010dnou te\u00f3riou. D\u00f4le\u017eitou s\u00fa\u010das\u0165ou je bezpe\u010dnos\u0165 datab\u00e1zov\u00fdch aplik\u00e1ci\u00ed, kde sa nau\u010d\u00edte identifikova\u0165 rizik\u00e1 ako SQL Injection a implementova\u0165 prevent\u00edvne opatrenia vr\u00e1tane hashovania hesiel a pr\u00e1ce s d\u00e1tov\u00fdmi typmi BLOB. Po absolvovan\u00ed kurzu budete schopn\u00ed navrhova\u0165, optimalizova\u0165 a zabezpe\u010dova\u0165 datab\u00e1zov\u00e9 rie\u0161enia na pokro\u010dilej \u00farovni, p\u00edsa\u0165 komplexn\u00e9 SQL dopyty a efekt\u00edvne pracova\u0165 s d\u00e1tami v r\u00f4znych datab\u00e1zov\u00fdch syst\u00e9moch, a ak sa chcete skuto\u010dne nau\u010di\u0165 pracova\u0165 s pokro\u010dil\u00fdm SQL a sta\u0165 sa datab\u00e1zov\u00fdm \u0161pecialistom, tak toto je ide\u00e1lny online kurz pre v\u00e1s.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Online kurz SQL II. Mierne Pokro\u010dil\u00fd v\u00e1s nau\u010d\u00ed pracova\u0165 s poddopytmi, joinmi, indexami, optimaliz\u00e1ciou v\u00fdkonu a bezpe\u010dnos\u0165ou datab\u00e1z tak, aby ste zvl\u00e1dli navrhova\u0165 a spravova\u0165 pokro\u010dil\u00e9 datab\u00e1zov\u00e9 rie\u0161enia v praxi.","protected":false},"author":4,"featured_media":467,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[55,49,73],"product_tag":[188],"class_list":{"0":"post-470","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-online-kurzy-sql","7":"product_cat-online-kurzy-databazy-statistika-analytika","8":"product_cat-bez-kategorie","9":"product_tag-databazy-a-analytika","11":"first","12":"instock","13":"sale","14":"sold-individually","15":"taxable","16":"shipping-taxable","17":"purchasable","18":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v25.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Online kurz SQL II. 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