N\u1ebfu b\u1ea1n \u0111ang b\u1eaft tay nghi\u00ean c\u1ee9u cho ra m\u1ed9t s\u1ea3n ph\u1ea9m m\u1edbi, b\u1ea1n s\u1ebd l\u00e0m sao \u0111\u1ec3 tra c\u1ee9u nhanh ch\u00f3ng nh\u1eefng t\u01b0 li\u1ec7u li\u00ean quan \u0111\u00e2y? N\u1ebfu b\u1ea1n \u0111\u1eb7t mua m\u1ed9t t\u1ea5m v\u00e9 m\u00e1y bay t\u1eeb B\u1eafc Kinh \u0111i New York th\u00ec l\u00e0m sao \u0111\u1ec3 h\u1ecfi c\u00e1c tin \u0111\u1eb7t v\u00e9 nh\u1eefng chuy\u1ebfn bay li\u00ean quan v\u00e0 l\u00e0m xong th\u1ee7 t\u1ee5c \u0111\u00e2y? Ng\u00e0y nay tr\u00ean m\u1ea1ng Internet \u0111\u00e3 ch\u1ee9a \u0111\u1ea7y c\u00e1c lo\u1ea1i th\u00f4ng tin th\u00ec ch\u00fang ta ph\u1ea3i l\u00e0m sao \u0111\u00e2y \u0111\u1ec3 ch\u1ecdn l\u1ecdc th\u00f4ng tin b\u1eb1ng gi\u00e1 r\u1ebb m\u00e0 hi\u1ec7u qu\u1ea3 l\u1ea1i cao \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng tri th\u1ee9c c\u1ea7n bi\u1ebft? T\u1ea5t c\u1ea3 nh\u1eefng c\u00e1i \u0111\u00f3 \u0111\u1ec1u \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1eb1ng tra c\u1ee9u th\u00f4ng tin. V\u1eady th\u1ebf n\u00e0o l\u00e0 tra c\u1ee9u th\u00f4ng tin \u0111\u00e2y?<\/p>\n\n\n\n
Tra c\u1ee9u th\u00f4ng tin l\u00e0 ch\u1ec9 qu\u00e1 tr\u00ecnh thu th\u1eadp, gia c\u00f4ng v\u00e0 l\u01b0u tr\u1eef th\u00f4ng tin theo ph\u01b0\u01a1ng th\u1ee9c nh\u1ea5t \u0111\u1ecbnh r\u1ed3i t\u00ecm ra nh\u1eefng th\u00f4ng tin c\u1ea7n thi\u1ebft cho thu\u00ea bao. T\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a n\u00f3 l\u00e0 vi\u1ec7c l\u01b0u tr\u1eef v\u00e0 tra c\u1ee9u th\u00f4ng tin. Th\u1ebf nh\u01b0ng, th\u01b0\u1eddng ch\u00fang ta n\u00f3i t\u1edbi vi\u1ec7c tra c\u1ee9u th\u00f4ng tin th\u00ec ch\u1ec9 \u0111\u1ec1 c\u1eadp t\u1edbi b\u1ed9 ph\u1eadn sau c\u1ee7a qu\u00e1 tr\u00ecnh n\u00e0y. Ngh\u0129a l\u00e0 qu\u00e1 tr\u00ecnh t\u00ecm ki\u1ebfm th\u00f4ng tin c\u1ea7n thi\u1ebft trong kho d\u1eef li\u1ec7u. C\u00f2n v\u1ec1 b\u1ed9 ph\u1eadn tr\u01b0\u1edbc c\u1ee7a qu\u00e1 tr\u00ecnh n\u00e0y l\u1ea1i th\u01b0\u1eddng thu\u1ed9c v\u1ec1 ph\u1ea1m tr\u00f9 c\u00f4ng vi\u1ec7c x\u00e2y d\u1ef1ng kho d\u1eef li\u1ec7u.<\/p>\n\n\n\n
Vi\u1ec7c tra c\u1ee9u chia theo n\u1ed9i dung tra c\u1ee9u th\u00ec \u0111\u1ea1i th\u1ec3 c\u00f3 th\u1ec3 chia ra tra c\u1ee9u v\u0103n hi\u1ebfn, tra c\u1ee9u s\u1ef1 th\u1ef1c v\u00e0 tra c\u1ee9u s\u1ed1 tr\u1ecb. Tra c\u1ee9u v\u0103n hi\u1ebfn thu\u1ed9c quy\u1ec1n s\u1edf h\u1eefu tr\u00ed tu\u1ec7 trong kho d\u1eef li\u1ec7u WPI, \u0111\u00f3 thu\u1ed9c v\u1ec1 tra c\u1ee9u v\u0103n hi\u1ebfn. Tra c\u1ee9u ti\u1ec3u s\u1eed m\u1ed9t ai \u0111\u00f3 trong kho d\u1eef li\u1ec7u h\u1ed3 s\u01a1 nh\u00e2n s\u1ef1, \u0111\u00f3 thu\u1ed9c v\u1ec1 tra c\u1ee9u s\u1ef1 th\u1ef1c. Tra c\u1ee9u s\u1ed1 li\u1ec7u giao d\u1ecbch th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n, \u0111\u00f3 thu\u1ed9c v\u1ec1 tra c\u1ee9u s\u1ed1 tr\u1ecb. Kho d\u1eef li\u1ec7u ng\u00e0y nay \u0111\u00e3 th\u1ef1c hi\u1ec7n vi\u1ec7c qu\u1ea3n l\u00fd kho multimedia nh\u1ea5t th\u1ec3 h\u00f3a h\u00ecnh, ch\u1eef, ti\u1ebfng. Cho n\u00ean n\u1ed9i dung ba lo\u1ea1i d\u1eef li\u1ec7u k\u1ec3 tr\u00ean bao g\u1ed3m \u00e2m thanh, h\u00ecnh h\u1ecda, tranh \u1ea3nh v\u00e0 h\u00ecnh \u1ea3nh \u0111\u1ed9ng. Tra c\u1ee9u tin chia theo ph\u01b0\u01a1ng th\u1ee9c c\u00f4ng t\u00e1c th\u00ec c\u00f3 hai lo\u1ea1i l\u00e0 tra c\u1ee9u li\u00ean c\u01a1 v\u00e0 tra c\u1ee9u tr\u00ean m\u1ea1ng. Tra c\u1ee9u li\u00ean c\u01a1 l\u00e0 thu\u00ea bao ti\u1ebfn h\u00e0nh tra c\u1ee9u trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng c\u1ee5c b\u1ed9 \u0111\u1ec3 nhanh ch\u00f3ng c\u00f3 \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 tra c\u1ee9u. Tra c\u1ee9u tr\u00ean m\u1ea1ng l\u00e0 ch\u1ec9 vi\u1ec7c ng\u01b0\u1eddi s\u1eed d\u1ee5ng tra c\u1ee9u th\u00f4ng tin trong ph\u1ea1m vi th\u1ebf gi\u1edbi qua m\u1ea1ng Internet. L\u00fac n\u00e0y ph\u1ea3i s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm, n\u00f3 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng tra c\u1ee9u kho d\u1eef li\u1ec7u x\u00e2y d\u1ef1ng tr\u00ean c\u01a1 s\u1edf h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh c\u00f3 t\u00ednh n\u0103ng cao. C\u00e1c trang web ti\u1ebfng Anh n\u1ed5i ti\u1ebfng c\u00f3 Yahoo, Alta, Vista, Infoseek v\u00e0 ti\u1ebfng Trung Qu\u1ed1c c\u00f3 Sina, Baidu. Tr\u00ean m\u1ea1ng Internet, t\u00e0i nguy\u00ean th\u00f4ng tin \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp r\u1ea5t c\u00f3 ph\u01b0\u01a1ng ph\u00e1p, c\u00e1c th\u00f4ng tin c\u1ea7n thi\u1ebft cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u1eeb kinh t\u1ebf, ch\u00ednh tr\u1ecb \u0111\u1ebfn v\u0103n h\u00f3a khoa h\u1ecdc k\u1ef9 thu\u1eadt \u0111\u1ec1u c\u00f3 th\u1ec3 l\u1ea5y \u0111\u01b0\u1ee3c \u1edf m\u1ea1ng Internet. Ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 l\u1ea5y \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 v\u00e0 \u0111\u1ed9ng th\u00e1i nghi\u00ean c\u1ee9u m\u1edbi nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi ch\u1ec9 trong m\u1ea5y ph\u00fat b\u1eb1ng c\u00e1ch tra c\u1ee9u th\u00f4ng tin. Thanh thi\u1ebfu ni\u00ean c\u0169ng c\u00f3 th\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c t\u00e0i nguy\u00ean gi\u00e1o d\u1ee5c, t\u00e0i nguy\u00ean gi\u1ea3i tr\u00ed tr\u00ean m\u1ea1ng Internet qua m\u00e1y t\u00ednh n\u1ed1i m\u1ea1ng. S\u1eed d\u1ee5ng m\u00e1y t\u00ednh \u0111\u1ec3 tra c\u1ee9u th\u00f4ng tin \u0111\u00e3 tr\u1edf th\u00e0nh c\u00e1ch th\u1ee9c h\u1eefu hi\u1ec7u \u0111\u1ec3 nh\u1eefng ng\u01b0\u1eddi thu\u1ed9c c\u00e1c t\u1ea7ng l\u1edbp kh\u00e1c nhau trong x\u00e3 h\u1ed9i ng\u00e0y nay c\u00f3 \u0111\u01b0\u1ee3c th\u00f4ng tin, \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi.<\/p>\n\n\n\n
T\u1eeb kh\u00f3a: Tra c\u1ee9u th\u00f4ng tin; Tra c\u1ee9u li\u00ean c\u01a1; Tra c\u1ee9u tr\u00ean m\u1ea1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"
N\u1ebfu b\u1ea1n \u0111ang b\u1eaft tay nghi\u00ean c\u1ee9u cho ra m\u1ed9t s\u1ea3n ph\u1ea9m m\u1edbi, b\u1ea1n s\u1ebd l\u00e0m sao \u0111\u1ec3 tra c\u1ee9u nhanh ch\u00f3ng nh\u1eefng t\u01b0 li\u1ec7u li\u00ean quan \u0111\u00e2y? N\u1ebfu b\u1ea1n \u0111\u1eb7t mua m\u1ed9t t\u1ea5m v\u00e9 m\u00e1y bay t\u1eeb B\u1eafc Kinh \u0111i New York th\u00ec l\u00e0m sao \u0111\u1ec3 h\u1ecfi c\u00e1c tin \u0111\u1eb7t v\u00e9 nh\u1eefng chuy\u1ebfn bay […]<\/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":[15,13],"tags":[],"class_list":["post-10438","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tin-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10438","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=10438"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10438\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=10438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=10438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=10438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}