Munyaya ino, uchadzidza sei ratidza ruzivo rwedatabase muOracle Database Express Edition. Oracle Database Express Edition ndeyemahara, isina huremu vhezheni yeiyo inozivikanwa Oracle dhatabhesi manejimendi system. Kuratidza ruzivo rwedatabase ibasa rakajairika kune vatariri vedatabase uye vanogadzira, sezvo zvichikutendera iwe kuti uwane tarisiro yechimiro uye zvirimo mudhatabhesi. Neraki, muOracle Database Express Edition, kune akati wandei akapusa uye anoshanda nzira dzekuratidza ruzivo urwu. Pazasi, isu tinokuratidza dzimwe dzedzakajairika nzira dzekuita izvi.

- Nhanho nhanho ➡️ Maitiro ekuratidza ruzivo rwedatabase muOracle Database Express Edition?

Maitiro ekuratidza ruzivo rwedatabase muOracle Database Express Edition?

• Vhura iyo SQL Command Line interface: Kutanga kuratidza ruzivo rwedatabase muOracle Database Express Edition, vhura iyo SQL Command Line interface pakombuta yako.
• Log in: Kana iyo interface yavhurwa, pinda mudura rako uchishandisa zita rako rekushandisa uye password.
• Nyora mubvunzo: Kana wapinda, nyora mubvunzo waunoda kushandisa kuratidza ruzivo rwaunoda kubva mudura re database. Ita shuwa kuti unoshandisa syntax chaiyo kuitira kuti mubvunzo ufambe pasina zvikanganiso.
• Mhanya mubvunzo: Kana wangonyora mubvunzo, mhanya muSQL Command Line interface. Iyo dhatabhesi ichagadzirisa mubvunzo uye kuratidza ruzivo rwakakumbirwa pachiratidziri.
• Tarisa zvabuda: Mushure mekuita mubvunzo, ongorora zvabuda zvinoratidzwa pachiratidziri. Ita shuwa kuti ruzivo rwawaitarisira uye runoratidzwa nemazvo.
• Sevha mubvunzo: Kana uchida kushandisa mubvunzo mumwe chete mune ramangwana, funga kuuchengeta kufaira kuitira kuti ugone kuuwana zviri nyore nguva inotevera paunenge uchiida.

Q&A

Oracle Database Express Edition Mibvunzo Inowanzo bvunzwa

Maitiro ekubatanidza kune database muOracle Database Express Edition?

1. Vhura terminal yako kana command console.
2. Type sqlplus uye tinya Enter.
3. Isa zita rako rekushandisa uye password kana wakumbirwa.

Maitiro ekuratidza matafura muOracle Database Express Edition?

1. Batanidza kune dhatabhesi uchishandisa sqlplus.
2. Type SARUDZA * KUBVA tafura_name; uye tinya Enter.

Maitiro ekuona chimiro chetafura muOracle Database Express Edition?

1. Kubva sqlplus, nyora RUDZIRA table_name;
2. Dzvanya Enter kuti uone chimiro chetafura.

Nzira yekuratidza sei ruzivo rwedatabase muOracle Database Express Edition?

1. Shandisa chirevo SARUDZA specific_columns KUBVA table_name;
2. Tsiva "specific_columns" nemakoramu aunoda kuratidza uye "tafura_name" nezita retafura.

Maitiro ekubvunza data kubva kune akawanda matafura muOracle Database Express Edition?

1. Shandisa chirevo SARUDZA makoramu KUBVA patafura1, table2 PAPI join_condition;
2. Tsiva "makoramu" nemakoramu aunoda uye "tafura1", "tafura2" nemazita ematafura.

Maitiro ekumhanyisa mubvunzo nemamiriro muOracle Database Express Edition?

1. Shandisa SARUDZA makoramu KUBVA table_name WHERE mamiriro;
2. Tsiva "makoramu" nemakoramu aunoda kuratidza, "tafura_name" ine zita retafura, uye "mamiriro" nemamiriro aunoda kuisa.

Maitiro ekuratidza mhedzisiro yakarongedzwa muOracle Database Express Edition?

1. Shandisa chirevo SARUDZA makoramu KUBVA table_name ORDER BY column_to_sort;
2. Chinja "columns" kumakoramu auri kuda kuratidza, "table_name" kuzita retafura, uye "column_to_sort" kuchikamu chaunoda kuronga zvabuda nacho.

Maitiro ekudzikamisa huwandu hwemitsara inoratidzwa muOracle Database Express Edition?

1. Shandisa chirevo SARUDZA makoramu KUBVA table_name WHERE mamiriro UYE ROWNUM <= nhamba_yemitsara;
2. Tsiva "columns", "table_name", "condition" uye "nhamba_yemitsara" nehunhu hwako chaihwo.

Maitiro ekuratidza akasiyana mhedzisiro muOracle Database Express Edition?

1. Shandisa chirevo SARUDZA DISTINCT makoramu KUBVA table_name;
2. Chinja "makoramu" kumakoramu aunoda kuratidza uye "tafura_name" kuzita retafura.

Maitiro ekuratidza nguva iripo muOracle Database Express Edition?

1. Shandisa basa racho SARUDZA SYSDATE KUBVA mbiri;
2. Uyu mubvunzo uchadzosa zuva uye nguva iripo.