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单选题PDB是蛋白质的（）。A 分类数据库B 结构数据库C 模体数据库D 结构域数据库

题目
单选题
PDB是蛋白质的（）。
A

分类数据库

B

结构数据库

C

模体数据库

D

结构域数据库

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相似问题和答案

第1题：

Your multitenant container database (CDB) contains a pluggable database, HR_PDB. The default permanent tablespace in HR_PDB is USERDATA. The container database (CDB) is open and you connect RMAN.You want to issue the following RMAN command:RMAN > BACKUP TABLESPACE hr_pdb:userdata;Which task should you perform before issuing the command?（）

A. Place the root container in ARHCHIVELOG mode.

B. Take the user data tablespace offline.

C. Place the root container in the nomount stage.

D. Ensure that HR_PDB is open.


参考答案：D

第2题：

You create a new pluggable database, HR_PDB, from the seed database. Which three tablespaces arecreated by default in HR_PDB?()

A.SYSTEM

B.SYSAUX

C.EXAMPLE

D.UNDO

E.TEMP

F.USERS


参考答案：A, B, E

第3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4题：

（）是铂金的标识。

  • A、Pd
  • B、Pt
  • C、Au
  • D、Ag

正确答案:B

第5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：

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8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9题：

A.pD
B.pA
C.C
D.α
E.t

反映药物内在活性的大小的是

答案：D
解析：
本组题考查药理学参数。Pa是指激动药ED增加2个对数级所需要拮抗药浓度的负对数，用以衡量拮抗药的强度。pD反映激动药与受体亲和力大小，pD值越大表示激动药与受体的亲和力越大。α反映内在活性的大小，α=0，无内在活性；α<1，内在活性有限；α接近1，有较高的内在活性。C是药物峰浓度，t是达峰时间。故本组题答案应选D。

第10题：

You create a new pluggable database, HR_PDB, from the seed database. Which three tablespaces arecreated by default in HR_PDB?（）

  • A、SYSTEM
  • B、SYSAUX
  • C、EXAMPLE
  • D、UNDO
  • E、TEMP
  • F、USERS

正确答案:A,B,E

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