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单选题关于PDB数据库,正确的是()A 是全世界最主要的大分子一级结构数据库B 其蛋白质结构数目与SwissProt/TrEMBL数据库中的序列数目相当C 包括蛋白质、核酸、蛋白质-核酸复合物等生物大分子的三维结构数据库D 由NCBI和EBI共同管理E 由DDBJ进行日常维护

题目
单选题
关于PDB数据库,正确的是()
A

是全世界最主要的大分子一级结构数据库

B

其蛋白质结构数目与SwissProt/TrEMBL数据库中的序列数目相当

C

包括蛋白质、核酸、蛋白质-核酸复合物等生物大分子的三维结构数据库

D

由NCBI和EBI共同管理

E

由DDBJ进行日常维护

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相似问题和答案

第1题:

Your multitenant container database has three pluggable databases (PDBs): PDB1, PDB2, and PDB3.Which two RMAN commands may be; used to back up only the PDB1 pluggable database?()

A. BACKUP PLUGGABLE DATABASE PDB1 while connected to the root container

B. BACKUP PLUGGABLE DATABASE PDB1 while connected to the PDB1 container

C. BACKUP DATABASE while connected to the PDB1 container

D. BACKUP DATABASE while connected to the boot container

E. BACKUP PLUGGABLE database PDB1 while connected to PDB2


参考答案:A, C

第2题:

Which statement is true concerning dropping a pluggable database (PDB)?()

A. The PDB must be open in read-only mode.

B. The PDB must be in mount state.

C. The PDB must be unplugged.

D. The PDB data files are always removed from disk.

E. A dropped PDB can never be plugged back into a multitenant container database (CDB).


参考答案:B

第3题:

OWL数据来源于SWISS-PROT、PIR、GenPept、SWISS-PROT、PDB、NRL3D等数据库,所以OWL的数据量最多。()

此题为判断题(对,错)。


参考答案:×

第4题:

下列关于合约程序化PDB对接方式,灵活自主性投放描述正确的是:()

  • A、支持API对接
  • B、返量机制
  • C、DCO动态创意优化
  • D、FirstLook优选购买

正确答案:A,B,C,D

第5题:

关于数据库,下列说法正确的是( )。

A.数据库就是二维关系表

B.数据库就是表和关系的结合

C.数据库就是关系

D.数据库就是数据格


正确答案:B

第6题:

Which two statements are true concerning the Resource Manager plans for individual pluggabledatabases (PDB plans) in a multitenant container database (CDB)?()

A. If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that pdb.

B. In a PDB plan, subplans may be used with up to eight consumer groups.

C. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the cdb.

D. If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.

E. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.


参考答案:A, B, C, D, E

第7题:

Your multitenant container database, CDB1, is running in ARCHIVELOG mode and has two pluggable databases, HR_PDB and ACCOUNTS_PDB. An RMAN backup exists for the database.You issue the command to open ACCOUNTS_PDB and find that the USERDATA.DBF data file for the default permanent tablespace USERDATA belonging to ACCOUNTS_PDB is corrupted.What should you do before executing the commands to restore and recover the data file in ACCOUNTS_PDB?()

A. Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDb.

B. Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE IMMEDIATE command.

C. Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.

D. Take the USERDATA tablespace offline in ACCOUNTS_PDb.


参考答案:D

第8题:

关于PDB数据库,正确的是

A、是全世界最主要的大分子一级结构数据库

B、其蛋白质结构数目与SwissProt/TrEMBL数据库中的序列数目相当

C、包括蛋白质、核酸、蛋白质-核酸复合物等生物大分子的三维结构数据库

D、由NCBI和EBI共同管理

E、由DDBJ进行日常维护


参考答案:C

第9题:

()是铂金的标识。

  • A、Pd
  • B、Pt
  • C、Au
  • D、Ag

正确答案:B

第10题:

连接MySQL后选择需要的数据库DB_NAME?以下哪些方法是对的()

  • A、连接后用USEDB_NAME选择数据库
  • B、连接后用SETDB_NAME选择数据库
  • C、用mysql-hhost-uuser-pDB_NAME连接数据库
  • D、用mysql-hhost-uuser-p-TDB_NAME连接数据库

正确答案:A,C

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