How to access table from one database to another database

<div class="Section1"><p class="MsoNormal" style="text-autospace:none"><font face="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew"">Hai all,</span></font><p class="MsoNormal"
style="text-autospace:none"><fontface="Courier New" size="2"><span style="font-size:10.0pt;font-family:"Courier
New""> Ihave 2 databases namee PAO and CAS.</span></font><p class="MsoNormal" style="text-autospace:none"><font
face="CourierNew" size="2"><span style="font-size:10.0pt;font-family:"Courier New""> PAO contains 3 schemas named
Public,pao,stsCAS contains 4 schemas </span></font><p class="MsoNormal" style="text-autospace:none"><font face="Courier
New"size="2"><span style="font-size:10.0pt;font-family:"Courier New""> named Public,cao,sts,reports</span></font><p
class="MsoNormal"style="text-autospace:none"><font face="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew""> </span></font><p class="MsoNormal" style="text-autospace:none"><font
face="CourierNew" size="2"><span style="font-size:10.0pt;font-family:"Courier New""> Now  i am in PAO database..now i
wantaccess table 'activity' in </span></font><p class="MsoNormal" style="text-autospace:none"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt;font-family:"Courier New""> schema 'cas' in CAS database.</span></font><p
class="MsoNormal"style="text-autospace:none"><font face="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew""> How it is posible.</span></font><p class="MsoNormal"
style="text-autospace:none"><fontface="Courier New" size="2"><span style="font-size:10.0pt;font-family:"Courier
New""> </span></font><pclass="MsoNormal" style="text-autospace:none"><font face="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew""> 2nd thing is...</span></font><p class="MsoNormal"
style="text-autospace:none"><fontface="Courier New" size="2"><span style="font-size:10.0pt;font-family:"Courier
New""> </span></font><pclass="MsoNormal" style="text-autospace:none"><font face="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew""> i have 2 servers access i.e local and mainserver.</span></font><p
class="MsoNormal"style="text-autospace:none"><font face="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew""> </span></font><p class="MsoNormal" style="text-autospace:none"><font
face="CourierNew" size="2"><span style="font-size:10.0pt;font-family:"Courier New""> How access table from one server
toanother server?</span></font><p class="MsoNormal" style="text-autospace:none"><font face="Courier New" size="2"><span
style="font-size:10.0pt;font-family:"CourierNew""> </span></font><p class="MsoNormal"><font face="Courier New"
size="2"><spanstyle="font-size:10.0pt; 
font-family:"Courier New""> please tel me...because we need this one</span></font><font face="Arial" size="2"><span
style="font-size:10.0pt;font-family:Arial"></span></font><pclass="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><span class="stylearial10ptblue"><font face="Times New Roman"
size="2"><spanstyle="font-size:10.0pt">  Thanks & Regards<font color="blue"><span
style="color:blue"></span></font></span></font></span><pclass="MsoNormal"><font color="blue" face="French Script MT"
size="5"><spanstyle="font-size:18.0pt;font-family:"French Script MT";color:blue">Vivekananda.R</span></font><p
class="MsoNormal"><fontcolor="blue" face="French Script MT" size="5"><span style="font-size:18.0pt;font-family:"French
ScriptMT";color:blue">Ph.9986463365</span></font><p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size:
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