{"id":10274,"date":"2021-11-21T19:43:28","date_gmt":"2021-11-21T12:43:28","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=10274"},"modified":"2021-11-21T19:43:30","modified_gmt":"2021-11-21T12:43:30","slug":"du-lieu-trong-dia-tu-duoc-luu-tru-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/du-lieu-trong-dia-tu-duoc-luu-tru-nhu-the-nao\/","title":{"rendered":"D\u1eef li\u1ec7u trong \u0111\u0129a t\u1eeb \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"\n<p>\u0110\u0129a m\u1ec1m l\u00e0 th\u1ee9 m\u00e0 ng\u01b0\u1eddi s\u1eed d\u1ee5ng m\u00e1y t\u00ednh c\u1ea7n ph\u1ea3i c\u00f3. Vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 ghi \u0111\u1ecdc ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a m\u00e1y \u0111\u1ec1u l\u1ea5y \u0111\u0129a m\u1ec1m l\u00e0m tr\u1ea1m trung chuy\u1ec3n. \u0110\u0129a m\u1ec1m m\u1edbi c\u0169ng gi\u1ed1ng nh\u01b0 m\u1ed9t kh\u00e1ch s\u1ea1n m\u1edbi x\u00e2y. C\u00e1c t\u1ea7ng v\u00e0 c\u00e1c bu\u1ed3ng \u0111\u1ec1u ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ed1, ngay c\u1ea3 l\u1ec5 t\u00e2n \u1edf ngay c\u1eeda ch\u00ednh c\u0169ng ch\u01b0a b\u1ed1 tr\u00ed. L\u00fac n\u00e0y, c\u00e1c nh\u00e2n vi\u00ean qu\u1ea3n l\u00fd kh\u00e1ch s\u1ea1n s\u1ebd kh\u00f4ng t\u00e0i n\u00e0o bi\u1ebft \u0111\u01b0\u1ee3c ph\u00f2ng n\u00e0o c\u00f2n tr\u1ed1ng, ph\u00f2ng n\u00e0o \u0111\u00e3 c\u00f3 kh\u00e1ch v\u00e0 ph\u00f2ng n\u00e0o th\u00ec ai \u1edf v.v.. Do v\u1eady m\u00e0 kh\u00f4ng th\u1ec3 qu\u1ea3n l\u00fd c\u1ea3 t\u00f2a kh\u00e1ch s\u1ea1n. Ch\u1ec9 khi kh\u00e1ch s\u1ea1n \u0111\u00e3 \u0111\u00e1nh s\u1ed1 t\u1ea7ng, \u0111\u00e1nh s\u1ed1 ph\u00f2ng v\u00e0 kh\u00e1ch s\u1ea1n \u0111\u00e3 b\u1ed1 tr\u00ed l\u1ec5 t\u00e2n th\u00ec kh\u00e1ch m\u1edbi c\u00f3 th\u1ec3 l\u00e0m th\u1ee7 t\u1ee5c \u1edf ho\u1eb7c thanh to\u00e1n \u1edf \u0111\u00e2y.<\/p>\n\n\n\n<p>\u0110\u0129a m\u1ec1m m\u1edbi ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p, \u0111\u00f3 l\u00e0 lo\u1ea1i \u0111\u0129a t\u1eeb tr\u1eafng, ch\u01b0a t\u1eebng l\u01b0u tr\u1eef m\u1ed9t tin n\u00e0o. \u0110\u0129a nh\u01b0 v\u1eady kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c ngay, m\u00e0 ph\u1ea3i \u0111\u1ecbnh d\u1ea1ng n\u00f3 \u0111\u00e3, r\u1ed3i m\u1edbi c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 ghi th\u00f4ng tin. Vi\u1ec7c \u0111\u1ecbnh d\u1ea1ng \u0111\u0129a t\u1eeb ch\u00ednh l\u00e0 vi\u1ec7c m\u00e1y t\u00ednh c\u0103n c\u1ee9 v\u00e0o quy c\u00e1ch c\u1ee7a \u0111\u0129a t\u1eeb v\u00e0 y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi s\u1eed d\u1ee5ng m\u00e0 chia ra nhi\u1ec1u r\u00e3nh v\u00e0 cung, \u0111\u00e1nh d\u1ea5u cung tr\u00ean c\u00e1c v\u1ecb tr\u00ed t\u01b0\u01a1ng \u1ee9ng. T\u1ea5t c\u1ea3 c\u00e1c c\u00f4ng vi\u1ec7c \u0111\u00f3 l\u00e0 \u0111\u1ec3 chu\u1ea9n b\u1ecb cho vi\u1ec7c l\u01b0u tr\u1eef tin tr\u00ean v\u1ecb tr\u00ed v\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a t\u1eebng cung.<\/p>\n\n\n\n<p>\u0110\u0129a t\u1eeb th\u01b0\u1eddng c\u00f3 hai m\u1eb7t, g\u1ecdi l\u00e0 m\u1eb7t 0 v\u00e0 m\u1eb7t 1. \u0110\u01b0\u1eddng r\u00e3nh t\u1eeb \u0111\u00e1nh s\u1ed1 b\u1eb1ng s\u1ed1 hai h\u00e0ng, \u0111\u01b0\u1eddng r\u00e3nh ngo\u00e0i c\u00f9ng l\u00e0 \u0111\u01b0\u1eddng 00, l\u1ea7n l\u01b0\u1ee3t v\u00e0o trong l\u00e0 01, 02,\u2026 M\u1ed7i \u0111\u01b0\u1eddng r\u00e3nh l\u1ea1i chia ra nhi\u1ec1u cung, m\u1ed7i cung t\u1ea1o b\u1edfi 512 byte (k\u00fd t\u1ef1). K\u00ed t\u1ef1 l\u00e0 \u0111\u01a1n v\u1ecb c\u01a1 b\u1ea3n \u0111\u1ec3 l\u01b0u tr\u1eef, m\u1ed7i k\u00ed t\u1ef1 c\u00f3 th\u1ec3 ch\u1ee9a s\u1ed1 nguy\u00ean kh\u00f4ng k\u00ed hi\u1ec7u trong kho\u1ea3ng t\u1eeb 0 \u0111\u1ebfn 255. \u0110\u01a1n v\u1ecb \u0111\u1ebfm dung l\u01b0\u1ee3ng ngo\u00e0i k\u00ed t\u1ef1 B c\u00f2n c\u00f3 KB (1 KB = 1024 B), (1 MB = 1024 KB). Nh\u1eefng \u0111\u0129a m\u1ec1m quy t\u1eafc kh\u00e1c nhau, khi \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh d\u1ea1ng th\u00ec s\u1ed1 \u0111\u01b0\u1eddng r\u00e3nh v\u00e0 s\u1ed1 cung ph\u00e2n chia c\u0169ng kh\u00e1c nhau. Ch\u01b0\u01a1ng tr\u00ecnh d\u1eabn h\u1ec7 th\u1ed1ng v\u00e0 tham s\u1ed1 \u0111\u0129a t\u1eeb th\u01b0\u1eddng l\u00e0 vi\u1ebft \u1edf cung 1 \u0111\u01b0\u1eddng r\u00e3nh t\u1eeb 0 c\u1ee7a \u0111\u0129a m\u1ec1m. (Hi\u1ec7n nay h\u1ea7u nh\u01b0 ng\u01b0\u1eddi ta kh\u00f4ng d\u00f9ng \u0111\u0129a m\u1ec1m &#8211; btv).<\/p>\n\n\n\n<p>T\u1eeb kh\u00f3a: M\u1eb7t \u0111\u0129a t\u1eeb; \u0110\u01b0\u1eddng r\u00e3nh t\u1eeb; Cung (sect\u01a1).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0110\u0129a m\u1ec1m l\u00e0 th\u1ee9 m\u00e0 ng\u01b0\u1eddi s\u1eed d\u1ee5ng m\u00e1y t\u00ednh c\u1ea7n ph\u1ea3i c\u00f3. Vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 ghi \u0111\u1ecdc ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a m\u00e1y \u0111\u1ec1u l\u1ea5y \u0111\u0129a m\u1ec1m l\u00e0m tr\u1ea1m trung chuy\u1ec3n. \u0110\u0129a m\u1ec1m m\u1edbi c\u0169ng gi\u1ed1ng nh\u01b0 m\u1ed9t kh\u00e1ch s\u1ea1n m\u1edbi x\u00e2y. C\u00e1c t\u1ea7ng v\u00e0 c\u00e1c bu\u1ed3ng \u0111\u1ec1u ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ed1, ngay [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[13],"tags":[],"class_list":["post-10274","post","type-post","status-publish","format-standard","hentry","category-tin-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10274","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=10274"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10274\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=10274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=10274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=10274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}